Opinion: Why does Xiaomi repeatedly use the Snapdragon 625?


Three. The Xiaomi Redmi 4 Prime (review here), the Redmi Note 4X (review here), and the upcoming Xiaomi Mi Max 2. These phones all use the Snapdragon 625, an incredibly energy efficient SoC. Don’t get me wrong, the Snapdragon 625 is the perfect SoC for the Redmi 4 Prime, but for a Redmi Note or a Mi Max? That’s a tough sell.

Why? A “too long, didn’t read” summary would be; previous generation Redmis set such a difficult precedent to follow that these new generation Redmi devices are disappointing in comparison. The use of the Snapdragon 625 has many informed users holding off on upgrading, but these units are still selling like hotcakes, especially in India.

Even though informed/power users are disappointed by the downgrade in performance, I fear that Xiaomi has set the bar incredibly high again with the repeated use of the Snapdragon 625 (I’m sure you can guess what I’m talking about) and this could pose an issue for the next generation of phones.

Xiaomi sometimes creates device that are too amazing for its own good, and the hate against the Snapdragon 625 is exactly a result of that.

Xiaomi: The Bar is Too High

xiaomi redmi note 3 pro

As previously mentioned, the incredibly high bar was set by none other than the Redmi Note 3 Pro. This phone imposed such an incredibly large precedent in price to performance that Xiaomi is hard pressed to continue in such a manner.

While the Redmi Note 3 Pro definitely had its fair share of criticisms, the value it represented was completely unparalleled, warping our expectations for future generations (the Redmi Note 4X).

I do understand why Xiaomi is using the Snapdragon 625 in so many of their phones though. Regular consumers by and large do not know the difference between a Snapdragon 625, 650, or 821. They care whether a phone is fast in practice and the most tech savvy of the bunch might hazard a glance at core count or clock speed.

To those who don’t live in our world, a 10 core Helio X20 seems like the obvious choice next to an 8 core Snapdragon 835. To a worldwide company like Xiaomi, the majority of their customer base thinks like that. Those of us who can differentiate between a Snapdragon 615 and 616 (who remembers the overheating issues with 615 chips?) are few and far between and while Xiaomi will try to do everything in their power to keep us, the vocal 1% happy, their priority is and always will be the 99%.

And thus the reason why Xiaomi uses the Snapdragon 625 in many of their phones.

Does Xiaomi care about us? Of course they do, but creating a smartphone means compromise, and disappointing a small but vocal portion of the internet in exchange for the benefits of using the Snapdragon 625 (and the massive volume discounts that must come from purchasing mountains of 625 chips) must really be the case of the pros outweighing the cons.

Xiaomi: Fan Response

I’ve read through countless forum threads and I see hate against the Snapdragon 625 expressed over and over again. However, I’ve seen a significant amount of comments defending the Snapdragon 625, saying the hate against the Snapdragon 625 comes from those who have not used it, because there have been few complaints about the performance.

While that statement remains unverified, it doesn’t seem outlandish given the 625 is more than fast enough for regular consumers.

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However, in my opinion these commenters are missing the point. A downgrade is a downgrade is a downgrade, and those vocal enough to express their ire might not care that a Snapdragon 625 is fast enough for regular use, they are just disappointed that Xiaomi fell short of expectations. “How dare Xiaomi use the lowly Snapdragon 625 chip when they are REQUIRED to use a Snapdragon 652 class chip in the Mi Max 2!”

Read Also:  Xiaomi granted a new pop-up design patent

Even though the Snapdragon 625 is objectively slower than a Snapdragon 652 processor, many other factors drastically influence the real world performance. Factors like app libraries, OTA updates, and environmental factors (like temperature) all play a role in changing how fast a phone feels.

Maze Blade Unboxing

Nevertheless, I will concede a point to the angry mob; you can still feel a slight but noticeable speed difference between a Snapdragon 625 and Snapdragon 652. Even though the Snapdragon 625 can do everything a Snapdragon 650 can do, The 650 still does some things better.

Let’s flesh this out more; the positively ancient MTK6753 can run all the apps AND play the most intense Android games (right now) at 1080p with no stutter assuming the software was optimized correctly. Does that mean the MTK6753 is an acceptable chip for ALL consumers? Absolutely not, as the performance delta can be found elsewhere. Place a Maze Blade (MTK6753), Redmi Note 4X (Snapdragon 625), and Redmi Note 3 Pro (Snapdragon 650) side by side and you will see the difference between all three in UI lag, app launch lag time (especially this), and in general use.

Point being, the Snapdragon 625 is fast enough (while the older MTK6753 might not) for regular users not to notice, but informed consumers (I use this term to loosely lasso in any phone enthusiast) might be able to. That being said, I sincerely believe that showing a regular consumer a Snapdragon 625/650 app launch speed test wouldn’t be enough to incite a regular consumer to upgrade or complain, the Snapdragon 625 is fast enough.

Xiaomi: The Next High Bar

While Xiaomi has let many informed users down in terms of performance, its making up for that somewhat in the battery department. The Snapdragon 625 is probably the most power efficient phone SoC ever produced by Qualcomm (and MediaTek obviously) and this is very clearly reflected not only in Xiaomi phones but other notable examples like the Moto Z Play, Zenfone 3, etc. I do think this is less of an issue compared to the insane price to performance the Redmi Note 3 Pro manifested due to a couple of reasons;

  • SoC power efficiency trends upwards, meaning that newer generations of chips use less and less power for the same amount of performance.
  • The current Redmi incarnations get such incredible amounts of battery life that a slight decrease probably wouldn’t hurt any expectations. The Snapdragon 625 combined with a 4000mAh battery yields 3-5 day battery life easily, and I don’t think users or reviewers would begrudge a slight decrease in battery life.

With all that being said, I believe that Xiaomi will have to continue to tread carefully with the next generation of phones (not much else beats a 625 + >5000mAh battery). While it wouldn’t be too difficult to top our performance expectations with the next generation (considering the disappointment we felt this generation), they would have to make sure that battery life continues to be in the ballpark of what the Snapdragon 625 yields today.

Are you disappointed in Xiaomi’s use of the Snapdragon 625 in so many of their phones? What are your predictions for the next generation? Let us know in the comments down below!

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140 Comments

  1. Allanitomwesh
    June 7, 2017

    They better use SD660 on their next generation Redmi Notes.

    • princetom
      June 7, 2017

      Exactly. Using my mi max for another year, since it’s still faster than 625 anyway, why should i upgrade?

      • June 7, 2017

        Yup no reason

      • Flipp0
        June 10, 2017

        I also have Mi Max 1 I but will still update for the better design and build quality, stereo speakers, better battery life, vastly improved camera etc. IMO these things are more important than slightly faster loads speeds. SD625 is fast enough for me and things like build quality, sound and image quality is more important than a faster soc.

        • T-ReX
          January 24, 2018

          Dont be disappointed, as theres only a better battery life awaiting u. The other improvements are too small and unnoticeable to the average consumer, which is u

      • Allanitomwesh
        June 11, 2017

        They really shot themselves in the foot with the 625, the 652 phones are simply faster.

  2. Yeti hand
    June 7, 2017

    is there a huge difference between the 660 and 625 in real life usage?? No
    it all depend on the software optimisation.
    it’s all good

    • GoldenBoy
      June 7, 2017

      it could be a difference, like lags here and there or not fluent like a 660 could make.
      with a 5200 mAh battery you can fit a 660 easily.

      • Yeti hand
        June 8, 2017

        the lag here and there come from bad software optimisation, people always wants more more more, but most of the time more is useless unless you use your smartphone for bragging rights or nasa data compelling (lol). Even now I still don’t notice any difference between my mediapad x2 which processor is old as f””k and my xiaomi max. But people like to follow the trend :/

        • June 10, 2017

          That’s not true, even with optimization there is still more headroom on the SD652 vs the 625 as Lazar pointed out.

        • Lazar Prodanovic
          June 10, 2017

          That is called technology of technology in the philosophy & it pretty much pictures our current state…

        • T-ReX
          January 24, 2018

          Oh ok. You are the perect example of average consumer.

    • June 7, 2017

      Huge difference, no. But there will be a noticeable enough difference that is detectable by some but not by others.

    • Lazar Prodanovic
      June 8, 2017

      Their is a huge difference between Integer operations of cortex A53 & A72 & it’s some 80~100% per MHz as the software isn’t tuned as it should the Integer operations are mostly used which translates into huge performance difference in the real use.

      • Yeti hand
        June 8, 2017

        nope, for facebook, instagram and whatever 80% of the applications the average customer use, there won’t be any difference.

        • Lazar Prodanovic
          June 8, 2017

          Honey two facts are; Integer operations are mostly used on Android & big core’s are 80~100% faster in integer loads. The which core & how gets chosen to execute which task is determined by HMP scheduler logic which is naturally pore configured by most OEM’s and costume ROM’s also. It’s rather complicated system & needs to be coherently configured.
          Read the documentation if you want…
          https://android.googlesource.com/kernel/msm/+/android-msm-bullhead-3.10-marshmallow-dr/Documentation/scheduler/sched-hmp.txt

        • T-ReX
          January 24, 2018

          Well maybe you are the average consumer. Why are you even here, go to facebook and post ur next pic

    • T-ReX
      January 24, 2018

      Do u mean the 660?
      Or the 650?
      Anyways theres isnt much difference between 650 and 625 in todays games.
      But there sure is quite a noticable difference in graphics benchmarks
      The 660s is a next gen chip.Pretty sure theres gonna be noticeable performance increase in it vs 625

  3. Louis
    June 7, 2017

    Using the same SD625 for the 3 phones might actually benefit in terms of software updates. A huge part of the work when developing, is the compatibility with the soc.
    Usually, 3 teams would work on updates for 3 different phones. Now the 3 teams can work together for a big part of update, resulting in faster updates.
    It might also give more reason for them too keep the devices up-to-date. With almost the same efforts they usually would have to do to support 1 device, they can now support 3 devices. Seeing how well these redmi and mi max series sell, they would satisfy a huge number of customers when providing regular updates.

    Most budget phones don’t receive a lot of big updates, like android 6.0 –> android 7.0. That way, the company can keep the price of the device low by cutting the price in the software development department. Giving that all 3 the SD625 phones are budget phones, the volume discount and slightly cheaper soc’s might preserve some money to financiate further development for the devices.

    While I personally also wouldn’t mind a chip with more performance, I don’t think the chose for the snapdragon 625 is that bad. The performance loss isn’t that big anyway, and better battery life is always a welcome bonus.

    • June 8, 2017

      This is a good point. And to anyone other than us, these three phones are indeed very different

  4. TATA MATA
    June 7, 2017

    I just want to encourage you guys at gizchina to write more articles lik this one. We also appreciate your personal opinion.

    • June 7, 2017

      Yup, this was a lot of fun to write. Its just hard to come up with interesting ideas to write about.

  5. Shuujirou
    June 7, 2017

    Review Oukitel k10000 pro and max pls

  6. Allanitomwesh
    June 7, 2017

    They better use SD660 on their next generation Redmi Notes.

    • princetom
      June 7, 2017

      Exactly. Using my mi max for another year, since it’s still faster than 625 anyway, why should i upgrade?

    • Zi Jin Cheng
      June 8, 2017

      Yup no reason

    • Flipp0
      June 10, 2017

      I also have Mi Max 1 I but will still update for the better design and build quality, stereo speakers, better battery life, vastly improved camera etc. IMO these things are more important than slightly faster loads speeds. SD625 is fast enough for me and things like build quality, sound and image quality is more important than a faster soc.

    • Allanitomwesh
      June 11, 2017

      They really shot themselves in the foot with the 625, the 652 phones are simply faster.

    • T-ReX
      January 24, 2018

      Dont be disappointed, as theres only a better battery life awaiting u. The other improvements are too small and unnoticeable to the average consumer, which is u

  7. Yeti hand
    June 7, 2017

    is there a huge difference between the 660 and 625 in real life usage?? No
    it all depend on the software optimisation.
    it’s all good

    • Guest
      June 7, 2017

      it could be a difference, like lags here and there or not fluent like a 660 could make.
      with a 5200 mAh battery you can fit a 660 easily.

    • Zi Jin Cheng
      June 8, 2017

      Huge difference, no. But there will be a noticeable enough difference that is detectable by some but not by others.

    • Lazar Prodanovic
      June 8, 2017

      Their is a huge difference between Integer operations of cortex A53 & A72 & it’s some 80~100% per MHz as the software isn’t tuned as it should the Integer operations are mostly used which translates into huge performance difference in the real use.

    • Yeti hand
      June 8, 2017

      nope, for facebook, instagram and whatever 80% of the applications the average customer use, there won’t be any difference.

    • Yeti hand
      June 8, 2017

      the lag here and there come from bad software optimisation, people always wants more more more, but most of the time more is useless unless you use your smartphone for bragging rights or nasa data compelling (lol). Even now I still don’t notice any difference between my mediapad x2 which processor is old as f””k and my xiaomi max. But people like to follow the trend :/

    • Lazar Prodanovic
      June 8, 2017

      Honey two facts are; Integer operations are mostly used on Android & big core’s are 80~100% faster in integer loads. The which core & how gets chosen to execute which task is determined by HMP scheduler logic which is naturally pore configured by most OEM’s and costume ROM’s also. It’s rather complicated system & needs to be coherently configured.
      Read the documentation if you want…
      https://android.googlesource.com/kernel/msm/+/android-msm-bullhead-3.10-marshmallow-dr/Documentation/scheduler/sched-hmp.txt

    • Zi Jin Cheng
      June 10, 2017

      That’s not true, even with optimization there is still more headroom on the SD652 vs the 625 as Lazar pointed out.

    • Zi Jin Cheng
      June 10, 2017

      That’s not true, even with optimization there is still more headroom on the SD652 vs the 625 as Lazar pointed out.

    • Lazar Prodanovic
      June 10, 2017

      That is called technology of technology in the philosophy & it pretty much pictures our current state…

    • T-ReX
      January 24, 2018

      Do u mean the 660?
      Or the 650?
      Anyways theres isnt much difference between 650 and 625 in todays games.
      But there sure is quite a noticable difference in graphics benchmarks
      The 660s is a next gen chip.Pretty sure theres gonna be noticeable performance increase in it vs 625

    • T-ReX
      January 24, 2018

      Well maybe you are the average consumer. Why are you even here, go to facebook and post ur next pic

    • T-ReX
      January 24, 2018

      Oh ok. You are the perect example of average consumer.

    • Yeti hand
      February 23, 2018

      I just did it, did you like it 🙂

    • T-ReX
      February 24, 2018

      Ill like it if you grow a brain, and understand the differences between a 660 n 625.

    • Yeti hand
      February 24, 2018

      Really? 😀

    • Guest
      February 25, 2018

      Lol jk nope. 😀

  8. Rahul R
    June 7, 2017

    I think you are missing the point…650 or 652 performs better only on opening apps or stuff like that(that too not too significant), if you play hd games, redmi note 3 (i am have it) loads faster than redmi note 4(snapdragon 625 i am using this to compare it with my phone), but 15+ mins into the game, frame drops and thermal issues kick in whether it is 650 or 652(leeco le 2)…. but 625 continuous the way it is …i really like the article to much more indepth than this vague….

    • June 8, 2017

      My point is that to some people opening apps is more important than gaming. For example, I value app opening speed much more than gaming because I don’t play intense games on my phones, only casual ones.

      • Lazar Prodanovic
        June 8, 2017

        You would be surprised how bad job Xiaomi is doing with eMMC IO processing on both (file system & IO governor) ends. It almost can be doubled by use of up to date CAF along with switching to FIOPS/deadline & F2FS. To be honest this matters more than pure CPU in apps launching (especially IO latency).

        • June 10, 2017

          UFS2.0 storage would be a brute force solution to that wouldn’t it.

          And I don’t know enough about this topic to have an informed conversation with you, but I’ve seen a lot worse, especially on cheap laptops.

          • Lazar Prodanovic
            June 10, 2017

            Well you see it’s not about only what type of eMMC you use but also how you use it. For user experience more important part is latencies & response time all together with asynchronous R/W performance. & no UFS alone is not a big step forward, NAND type used is much more important especially on unbuffered & without much dyes (parallelism) implementation as they all are on mobiles. Switching to 3DXpoint will bring noticeable increases in performance but I am afraid we will have to wait considerably more amount of time until Micron makes it available for a mobile space…

    • Lazar Prodanovic
      June 8, 2017

      Well I need at least a half of hour to drop the A510 to a 450 MHz from 600 as the cause of thermal throttling which still makes it faster than Adreno on the S625, which doesn’t throttle at all as it uses only 40% power of the A510 one (⅓ smaller & based on 42% less power consuming process). You are very wrong about CPU part; when ever big A72 core’s kick in on the S65x they are faster 60~80% then A53’s on the S652. We control how & when they kick in on both SoC litherations by HMP (kernel tunables). At the end it’s possible to make a S65x as efficient as S625 (at least how Xiaomi uses it) & still faster in real usage.

      • Rahul R
        June 8, 2017

        nope, i am talking abt real world usage, and i have both phones and also have compared the same with leco le2(for exact reason I gave way this phone) which used 652 which heats (you dont have to play hd games for it to get warm and just after that you play asphalt you can easily catch drop frames(…i am not talking abt the theory I am talking abt the real life usage…you can check it either… also there will be ton of videos that is out there that shows what i just said…..!!! there are thermal apps that shows that and on redmi note 3(snapdragon 650) how many times phones thermal gets above 45 and phones ask us to cool down when you play any hd games is there to see!!!

        • Lazar Prodanovic
          June 9, 2017

          I have Mi Max, it never gets that hot.
          Used Xenowerk to on top 60 FPS to get it throttling & it still needs good 30+ minutes for it. & it’s as I described on MiUI which doesn’t use any hotplug. On costume ROM’s it’s possible to stop GPU throttling on both S65x at 550 MHz… Real world just eaten you.

          • Yeti hand
            June 9, 2017

            Maybe cuz the mix max is huge and the leeco uses thicker material therefore the heat dissipates way better, I bought the leeco le2 to my girl friend, YES it does become hot so YES Rahul is right

            • Lazar Prodanovic
              June 9, 2017

              Yup same goes for LeEco firmware (even worse) but that is the OEM fault. It’s rather manageable with proper config. & Raul still ain’t right because S65x with throttling GPU is still faster than S625 with one that doesn’t, in games naturally.

            • Yeti hand
              June 9, 2017

              Raul’s talking about the heat and its consequence, I’m quite surprised you’re still trying to argue didn’t I say software optimisation plays a huge role then you came out of no where saying no it’s not the case and now suddenly you bring it back in the conversation?? Ok
              Here is real life conclusion, the leeco le2 become hot very often and then lags, when I noticed that I send it back and got a refund, would it be the case with better software?? No therefore it’s time to accept that 625 or 660 MEH, as long as the software if acceptable nobody should care because in reality more doesn’t anything for the average user

            • Lazar Prodanovic
              June 9, 2017

              Let me brake it out to you; S65x series is capable of containing performance up to 1.4~1.6GHz (still it’s insane to go over 1.4 on 28nm HPM because leaking becomes huge) on two A72 core’s (depending of the device direct capabilities to spread the heat), on the S652-S653 if their is no core plugging mechanism (hotplug) & all big core’s are running on the high load it will fall down to 1017MHz which is pretty much the case with both OEM’s mentioned hire. How ever with clever use of the hotplug (so that it uses first & third core’s as idling one’s on big cluster) it’s possible to rise performance bar up 10% in comparation to S650. Now in the best bet real world performance projections the A72 running at 1.4GHz is equivalent to A53 running at 2.5~2.6GHz (considering it’s integer performance & that it’s 1.8x indexed for A72), if you go for a not the best one things get worse for A53 as integer operations don’t scale good in SMP. Regarding A510 GPU performance it drops to sustained 450MHz (with proper hotplug and cpu governor settings it’s possible to push this up to 550MHz). This is still more than Adreno on S625 can peak archive.
              I don’t understand the scheduler & governor tuning as “software optimisations”, they are there to partially compensate for a bad written one (in user space) & only if properly configured. Trough is that I unfortunately don’t know any OEM that makes it right (to the end) regarding this & this is actually a sad picture we get as an user experience end.
              Their is much more to it but I really don’t have that much time nor it is worth of it.

            • Yeti hand
              June 9, 2017

              Again with the technical talk yet when it comes to real life usage… :/

            • Lazar Prodanovic
              June 10, 2017

              I thought we are taking about tech hire…

            • Yeti hand
              June 12, 2017

              My bad then, I only seek what is useful for my daily life

            • T-ReX
              January 24, 2018

              Hello daily life talking, no overheating on sd 650 here.

            • June 10, 2017

              Where do you live lazar? That has a huge impact on overheating. I believe indian users are much more susceptible to overheating than many other countries, so much so that even the SD652 had wide reports of overheating in India.

            • Lazar Prodanovic
              June 10, 2017

              In Sarajevo, Bosnia and Hercegovina & templates hire go from +40°C to – 25°C but that is not a point, point is bad firmware (kernel) optimization’s of scheduling logic along with abstinence of hot pluging implementation from most OEM’s (not just Xiaomi & LeEco but & big & famous one’s as Samsung) which all together lead to bad real life usage & with it together to bad user experience, but you get 3% better results in benchmarks that way & UI is a tad faster. Things aren’t much better on the costume arena front either for instance LineageOS disabled core_ctl hotplug on the all official builds in the past two months (because some other memory hanging issues)… All in all when you look at some scheduling “optimization’s” from both OEM’s and community you don’t know would you cry or laugh.

        • T-ReX
          January 24, 2018

          My redmi note 3 never asked for a ‘cool down’, playing 2-3 hours of nfs no limits. No lags either. The 652 might have some problems as there are two more big cores, which adds to the thermal gain.

  9. Louis
    June 7, 2017

    Using the same SD625 for the 3 phones might actually benefit in terms of software updates. A huge part of the work when developing, is the compatibility with the soc.
    Usually, 3 teams would work on updates for 3 different phones. Now the 3 teams can work together for a big part of update, resulting in faster updates.
    It might also give more reason for them too keep the devices up-to-date. With almost the same efforts they usually would have to do to support 1 device, they can now support 3 devices. Seeing how well these redmi and mi max series sell, they would satisfy a huge number of customers when providing regular updates.

    Most budget phones don’t receive a lot of big updates, like android 6.0 –> android 7.0. That way, the company can keep the price of the device low by cutting the price in the software development department. Giving that all 3 the SD625 phones are budget phones, the volume discount and slightly cheaper soc’s might preserve some money to financiate further development for the devices.

    While I personally also wouldn’t mind a chip with more performance, I don’t think the chose for the snapdragon 625 is that bad. The performance loss isn’t that big anyway, and better battery life is always a welcome bonus.

    • Zi Jin Cheng
      June 8, 2017

      This is a good point. And to anyone other than us, these three phones are indeed very different

  10. TATA MATA
    June 8, 2017

    I just want to encourage you guys at gizchina to write more articles lik this one. We also appreciate your personal opinion.

    • Zi Jin Cheng
      June 8, 2017

      Yup, this was a lot of fun to write. Its just hard to come up with interesting ideas to write about.

  11. Shuujirou
    June 8, 2017

    Review Oukitel k10000 pro and max pls

    • Zi Jin Cheng
      June 8, 2017

      Yup coming up 🙂

  12. Rahul R
    June 8, 2017

    I think you are missing the point…650 or 652 performs better only on opening apps or stuff like that(that too not too significant), if you play hd games, redmi note 3 (i am have it) loads faster than redmi note 4(snapdragon 625 i am using this to compare it with my phone), but 15+ mins into the game, frame drops and thermal issues kick in whether it is 650 or 652(leeco le 2)…. but 625 continuous the way it is …i really like the article to much more indepth than this vague….

    • Zi Jin Cheng
      June 8, 2017

      My point is that to some people opening apps is more important than gaming. For example, I value app opening speed much more than gaming because I don’t play intense games on my phones, only casual ones.

    • Lazar Prodanovic
      June 8, 2017

      You would be surprised how bad job Xiaomi is doing with eMMC IO processing on both (file system & IO governor) ends. It almost can be doubled by use of up to date CAF along with switching to FIOPS/deadline & F2FS. To be honest this matters more than pure CPU in apps launching (especially IO latency).

    • Lazar Prodanovic
      June 8, 2017

      Well I need at least a half of hour to drop the A510 to a 450 MHz from 600 as the cause of thermal throttling which still makes it faster than Adreno on the S625, which doesn’t throttle at all as it uses only 40% power of the A510 one (⅓ smaller & based on 42% less power consuming process). You are very wrong about CPU part; when ever big A72 core’s kick in on the S65x they are faster 60~80% then A53’s on the S652. We control how & when they kick in on both SoC litherations by HMP (kernel tunables). At the end it’s possible to make a S65x as efficient as S625 (at least how Xiaomi uses it) & still faster in real usage.

    • Rahul R
      June 9, 2017

      nope, i am talking abt real world usage, and i have both phones and also have compared the same with leco le2(for exact reason I gave way this phone) which used 652 which heats (you dont have to play hd games for it to get warm and just after that you play asphalt you can easily catch drop frames(…i am not talking abt the theory I am talking abt the real life usage…you can check it either… also there will be ton of videos that is out there that shows what i just said…..!!! there are thermal apps that shows that and on redmi note 3(snapdragon 650) how many times phones thermal gets above 45 and phones ask us to cool down when you play any hd games is there to see!!!

    • Lazar Prodanovic
      June 9, 2017

      I have Mi Max, it never gets that hot.
      Used Xenowerk to on top 60 FPS to get it throttling & it still needs good 30+ minutes for it. & it’s as I described on MiUI which doesn’t use any hotplug. On costume ROM’s it’s possible to stop GPU throttling on both S65x at 550 MHz… Real world just eaten you.

    • Yeti hand
      June 9, 2017

      Maybe cuz the mix max is huge and the leeco uses thicker material therefore the heat dissipates way better in the max, I bought the leeco le2 to my girl friend, YES it does become hot so YES Rahul is right

    • Lazar Prodanovic
      June 9, 2017

      Yup same goes for LeEco firmware (even worse) but that is the OEM fault. It’s rather manageable with proper config. & Raul still ain’t right because S65x with throttling GPU is still faster than S625 with one that doesn’t, in games naturally.

    • Yeti hand
      June 9, 2017

      Raul’s talking about the heat and its consequence, I’m quite surprised you’re still trying to argue didn’t I say software optimisation plays a huge role then you came out of no where saying no it’s not the case and now suddenly you bring it back in the conversation?? Ok
      Here is real life conclusion, the leeco le2 become hot very often and then lags, when I noticed that I send it back and got a refund, would it be the case with better software?? No therefore it’s time to accept that 625 or 660 MEH, as long as the software if acceptable nobody should care because in reality more doesn’t anything for the average user

    • Lazar Prodanovic
      June 9, 2017

      Let me brake it out to you; S65x series is capable of containing performance up to 1.4~1.6GHz (still it’s insane to go over 1.4 on 28nm HPM because leaking becomes huge) on two A72 core’s (depending of the device direct capabilities to spread the heat), on the S652-S653 if their is no core plugging mechanism (hotplug) & all big core’s are running on the high load it will fall down to 1017MHz which is pretty much the case with both OEM’s mentioned hire. How ever with clever use of the hotplug (so that it uses first & third core’s as idling one’s on big cluster) it’s possible to rise performance bar up 10% in comparation to S650. Now in the best bet real world performance projections the A72 running at 1.4GHz is equivalent to A53 running at 2.5~2.6GHz (considering it’s integer performance & that it’s 1.8x indexed for A72), if you go for a not the best one things get worse for A53 as integer operations don’t scale good in SMP. Regarding A510 GPU performance it drops to sustained 450MHz (with proper hotplug and cpu governor settings it’s possible to push this up to 550MHz). This is still more than Adreno on S625 can peak archive.
      I don’t understand the scheduler & governor tuning as “software optimisations”, they are there to partially compensate for a bad written one (in user space) & only if properly configured. Trough is that I unfortunately don’t know any OEM that makes it right (to the end) regarding this & this is actually a sad picture we get as an user experience end.
      Their is much more to it but I really don’t have that much time nor it is worth of it.

    • Yeti hand
      June 9, 2017

      Again with the technical talk yet when it comes to real life usage… :/

    • Zi Jin Cheng
      June 10, 2017

      Where do you live lazar? That has a huge impact on overheating. I believe indian users are much more susceptible to overheating than many other countries, so much so that even the SD652 had wide reports of overheating in India.

    • Zi Jin Cheng
      June 10, 2017

      UFS2.0 storage would be a brute force solution to that wouldn’t it.

      And I don’t know enough about this topic to have an informed conversation with you, but I’ve seen a lot worse, especially on cheap laptops.

    • Lazar Prodanovic
      June 10, 2017

      In Sarajevo, Bosnia and Hercegovina & templates hire go from +40°C to – 25°C but that is not a point, point is bad firmware (kernel) optimization’s of scheduling logic along with abstinence of hot pluging implementation from most OEM’s (not just Xiaomi & LeEco but & big & famous one’s as Samsung) which all together lead to bad real life usage & with it together to bad user experience, but you get 3% better results in benchmarks that way & UI is a tad faster. Things aren’t much better on the costume arena front either for instance LineageOS disabled core_ctl hotplug on the all official builds in the past two months (because some other memory hanging issues)… All in all when you look at some scheduling “optimization’s” from both OEM’s and community you don’t know would you cry or laugh.

    • Lazar Prodanovic
      June 10, 2017

      Well you see it’s not about only what type of eMMC you use but also how you use it. For user experience more important part is latencies & response time all together with asynchronous R/W performance (then output/bandwidth). & no UFS alone is not a big step forward, NAND type used is much more important especially on unbuffered & without much dyes (parallelism) implementation as they all are on mobiles. Switching to 3DX point (or any of the new NV-RAM technologies currently in development for that matter) will bring noticeable increases in performance but I am afraid we will have to wait considerably more amount of time until Micron makes it available for a mobile space…

    • Lazar Prodanovic
      June 10, 2017

      I thought we are taking about tech hire…

    • Yeti hand
      June 13, 2017

      My bad then, I only seek what is useful for my daily life

    • T-ReX
      January 24, 2018

      My redmi note 3 never asked for a ‘cool down’, playing 2-3 hours of nfs no limits. No lags either. The 652 might have some problems as there are two more big cores, which adds to the thermal gain.

    • T-ReX
      January 24, 2018

      Hello daily life talking, no overheating on sd 650 here.

  13. Fox Hunter
    June 8, 2017

    Xiaomi should use mediatek or their own surge s1 instead of patent troll qualcomm garbage. We should all boycott patent trolls like intel and qualcomm. None of my phones use qualcomm chips, i only buy mediatek for now. All Redmi phones and Redmi note phones should abandon qualcomm and use the Surge S1 from Xiaomi. I dont care about gaming, i have a nintendo 3ds for that.

    • June 8, 2017

      The Surge S1 only has entry level performance though, you should go with Huawei

    • T-ReX
      January 24, 2018

      The 3ds has even lower graphics than a low end snapdragon gpu. Some gamer you are..

  14. fido futte
    June 8, 2017

    Snapdragon still has more reliable name than mediatek and is more stable- that is why !!

    • June 8, 2017

      Why?

      • Lazar Prodanovic
        June 8, 2017

        Because we at least can fix something not working properly on QC while you can only blow the whistle with MTK.
        As much as QC did wrong with their anticompetitive practices before (pushing both Texas Instruments & Broadcomm out) it’s a little to late now to change something for a good sake of those worthy of it. CAF is now only open stack.

        • June 10, 2017

          Haha I agree, that was a joke 🙂

  15. June 8, 2017

    I had the Xiaomi Redmi 3S Prime for awhile with SD 430. Now I have the 4 Prime with SD 625. A simple solitaire game I play occasionally lags a bit now and then on 4 Prime but never did on the 3S Prime. Can’t understand that.

    • June 8, 2017

      Lag on the 625? Its definitely slower than flagships but I’ve never seen lag on simple games like that.

      • June 8, 2017

        It only does it about once in 10 game plays. Sometimes a card will lag a split second, sometimes the sound lags behind the movement of a card.

        • Louis Mario
          June 9, 2017

          maybe because of its FHD display, i’ve read that 4x with a 720p one runs smoothly some heavy games like GTA, obviously not at full graphics.

          • June 10, 2017

            The Redmi 4X doesn’t use a Snapdragon 625 though, a 435 I believe

  16. Guest
    June 8, 2017

    Xiaomi should use mediatek or their own surge s1 instead of patent troll qualcomm garbage. We should all boycott patent trolls like intel and qualcomm. None of my phones use qualcomm chips, i only buy mediatek for now. All Redmi phones and Redmi note phones should abandon qualcomm and use the Surge S1 from Xiaomi. I dont care about gaming, i have a nintendo 3ds for that.

    • Zi Jin Cheng
      June 8, 2017

      The Surge S1 only has entry level performance though, you should go with Huawei

    • T-ReX
      January 24, 2018

      The 3ds has even lower graphics than a low end snapdragon gpu. Some gamer you are..

  17. fido futte
    June 8, 2017

    Snapdragon still has more reliable name than mediatek and is more stable- that is why !!

    • Zi Jin Cheng
      June 8, 2017

      Why?

    • Lazar Prodanovic
      June 8, 2017

      Because we at least can fix something not working properly on QC while you can only blow the whistle with MTK.
      As much as QC did wrong with their anticompetitive practices before (pushing both Texas Instruments & Broadcomm out) it’s a little to late now to change something for a good sake of those worthy of it. CAF is now only open stack.

    • Zi Jin Cheng
      June 10, 2017

      Haha I agree, that was a joke 🙂

  18. Moose
    June 8, 2017

    I had the Xiaomi Redmi 3S Prime for awhile with SD 430. Now I have the 4 Prime with SD 625. A simple solitaire game I play occasionally lags a bit now and then on 4 Prime but never did on the 3S Prime. Can’t understand that.

    • Zi Jin Cheng
      June 8, 2017

      Lag on the 625? Its definitely slower than flagships but I’ve never seen lag on simple games like that.

    • Moose
      June 8, 2017

      It only does it about once in 10 game plays. Sometimes a card will lag a split second, sometimes the sound lags behind the movement of a card.

    • Louis Mario
      June 9, 2017

      maybe because of its FHD display, i’ve read that 4x with a 720p one runs smoothly some heavy games like GTA, obviously not at full graphics.

    • Zi Jin Cheng
      June 10, 2017

      The Redmi 4X doesn’t use a Snapdragon 625 though, a 435 I believe

  19. Lazar Prodanovic
    June 8, 2017

    Back to questions. I think next generation of SoC’s will be grim regarding higher mid range ones at least. Because ARM recently announced A55 A75 core’s will probably go as an unchanged design in the next gen flagship SoC’s leaving very little to none possibility for distancing the midrange one’s. Answer to the other questions is fairly simple Xiaomi couldn’t use S660 as it whosent available & it whosent available as it would have cannibalised the S835 sales. Xiaomi can turn things out by capitalising only on one model & I think this could be a Xiaomi Redmi Pro 2 for this year. I also think Xiaomi is getting afraid that it’s own midrange models culd kill its own top tire and that is another reason for distancing them future more because it’s one thing to kill concurrency and another one is suicide.

    • June 10, 2017

      If what you said is true, then Xiaomi would have used an SD660 if it was available then? Because if so, that would have been great.

      I also agree with you that a 660 would cannabalize the Mi6, but amongst which audience? Wou’dnt Xiaomi be able to tailor their advertising to both?

      • Lazar Prodanovic
        June 10, 2017

        Obviously Xiaomi isn’t capable of doing so. Instead they will try to slip it as cheaper Mi6(c) & afterwards to other models. They are trying to cut the corners on software development side & I don’t think users will like that not that MiUI currently is in a good shape…

  20. Lazar Prodanovic
    June 8, 2017

    Back to questions. I think next generation of SoC’s will be grim regarding higher mid range ones at least. Because ARM recently announced A55, A75 core’s will probably go as an unchanged design in the next gen flagship SoC’s leaving very little to none possibility for distancing the midrange one’s. Answer to the other questions is fairly simple Xiaomi couldn’t use S660 as it whosent available & it whosent available as it would have cannibalised the S835 sales. Xiaomi can turn things out by capitalising only on one model & I think this could be a Xiaomi Redmi Pro 2 for this year. I also think Xiaomi is getting afraid that it’s own midrange models culd kill its own top tire and that is another reason for distancing them future more because it’s one thing to kill concurrency and another one is suicide.

    • Zi Jin Cheng
      June 10, 2017

      If what you said is true, then Xiaomi would have used an SD660 if it was available then? Because if so, that would have been great.

      I also agree with you that a 660 would cannabalize the Mi6, but amongst which audience? Wou’dnt Xiaomi be able to tailor their advertising to both?

    • Lazar Prodanovic
      June 10, 2017

      Obviously Xiaomi isn’t capable of doing so. Instead they will try to slip it as cheaper Mi6(c) & afterwards to other models. They are trying to cut the corners on software development side & I don’t think users will like that not that MiUI even currently is in a good shape…

  21. fido futte
    June 9, 2017

    Look forward to se how good the Helio X30 is and how stable and how many bugs it has compare to snapdragon S835

    • June 10, 2017

      Don’t have too high hopes for MediaTek, I think the X30 will be a lot closer to the SD660 than the 835

      • Lazar Prodanovic
        June 10, 2017

        Actually it will be closer to Kirin 960 & S82x regarding GPU performance (surprise) while being competitive to the current gen on CPU front. Problem is MTK is very late with it and it isn’t cheap as yields aren’t/whosent good on TSMC 10nm FinFET process & that’s the main reason most OEM’s cancelled the orders…

  22. fido futte
    June 9, 2017

    Look forward to se how good the Helio X30 is and how stable and how many bugs it has compare to snapdragon S835

    • Zi Jin Cheng
      June 10, 2017

      Don’t have too high hopes for MediaTek, I think the X30 will be a lot closer to the SD660 than the 835

    • Lazar Prodanovic
      June 10, 2017

      Actually it will be closer to Kirin 960 & S82x regarding GPU performance (surprise) while being competitive to the current gen on CPU front. Problem is MTK is very late with it and it isn’t cheap as yields aren’t/whosent good on TSMC 10nm FinFET process & that’s the main reason most OEM’s cancelled the orders…

  23. Wolvie
    June 10, 2017

    Hmmm i got a habit TO BUY all my gadgets at medium level as it is the most value for money (performance vs $$$ ratio)

    SD83x is high end and too expensive, only buy if you got a lot of $$$ to burn
    SD65x – SD66x are middle end so best to buy (performance vs $$$ ratio the best)

    SD61x – SD62x are low end, only buy if got low budget.

    SD4xx is craps that i don’t even want to touch

    I could be wrong but this is my own personal opinion.
    Even when i advise my relatives and friends to buy computer is always the same

    Intel i7 is very fast but very expensive, buy only got extra budget (AKA damn but rich)

    Intel i5 is a a good buy (again ratio is good between pricing and performance)

    Intel i3 is low end so only buy if your budget is very low and totally don’t care about perfomance.

    Intel atom/celeron are craps, don’t buy this processor

    • June 10, 2017

      SD4xx isn’t actually as crap as you think it is, for example the Redmi 4A with the Snapdragon 425 I believe was OK, it was the RAM that was the bottleneck in there.

      But I agree with you, the SD660 is the best price/performance.

  24. Guest
    June 10, 2017

    Hmmm i got a habit TO BUY all my gadgets at medium level as it is the most value for money (performance vs $$$ ratio)

    SD83x is high end and too expensive, only buy if you got a lot of $$$ to burn
    SD65x – SD66x are middle end so best to buy (performance vs $$$ ratio the best)

    SD61x – SD62x are low end, only buy if got low budget.

    SD4xx is craps that i don’t even want to touch

    I could be wrong but this is my own personal opinion.
    Even when i advise my relatives and friends to buy computer is always the same

    Intel i7 is very fast but very expensive, buy only got extra budget (AKA damn but rich)

    Intel i5 is a a good buy (again ratio is good between pricing and performance)

    Intel i3 is low end so only buy if your budget is very low and totally don’t care about perfomance.

    Intel atom/celeron are craps, don’t buy this processor

    • Zi Jin Cheng
      June 10, 2017

      SD4xx isn’t actually as crap as you think it is, for example the Redmi 4A with the Snapdragon 425 I believe was OK, it was the RAM that was the bottleneck in there.

      But I agree with you, the SD660 is the best price/performance.

  25. Mr.Flying Zoom3rz
    June 28, 2017

    I love the SD625 that’s in my Lenovo P2. That’s the best battery efficient chip ever. No I won’t accept any decrease of battery life. It still can run all the games I play more than fine.

  26. Mr.Flying Zoom3rz
    June 28, 2017

    Mediatek should improve the battery life and the GPU power. Qualcomm should continue the good work in the battery department with SD625, but they need to drop a bit the prices of their flagship cpus. 😀

  27. Mr.Flying Zoom3rz
    June 28, 2017

    I love the SD625 that’s in my Lenovo P2. That’s the best battery efficient chip ever. No I won’t accept any decrease in battery life. It still can run all the games I play more than fine. Now I remember the old times when I was getting 4-5h SOT on other phones and even they had powerful cpus I hated these phones because of the weak battery. We don’t need the battery to be compensated by the cpu or the cpu by the battery. We need a new battery technology, large capacity but thin cells with increased life span compared to the current gen.

  28. Mr.Flying Zoom3rz
    June 28, 2017

    Mediatek should improve the battery life and the GPU power. Qualcomm should continue the good work in the battery department with SD625, but they need to drop a bit the prices of their flagship cpus. 😀

  29. costeakai
    December 28, 2017

    after 1 day , i am amazed by my new redmi note 4x.

  30. costeakai
    December 28, 2017

    after 1 day , i am amazed by my new redmi note 4x.

  31. Darynne~
    January 10, 2018

    Just love my redmi note 4x and how efficient it is on gaming, than my xp z2. But still sometimes though i can play with max settings, I’m still looking for a 60fps gaming. It’s that hard for the gpu can’t handle such thing but darn ip5s can play ultra settings with 60fps. And it was released in 2013!!

  32. Darynne~
    January 11, 2018

    Just love my redmi note 4x and how efficient it is on gaming, than my xp z2. But still sometimes though i can play with max settings, I’m still looking for a 60fps gaming. It’s that hard for the gpu can’t handle such thing but darn ip5s can play ultra settings with 60fps. And it was released in 2013!!

  33. Xeuron
    November 29, 2018

    And It’s 2018 and welcome the all new REDMI NOTE 6 PRO, better than the REDMI NOTE 5 Pro. Lets check the cpu, oh wait nvm. Its a downgrade.