System Performance

Following our Snapdragon 855 device overview, we should be relatively familiar with how the Xiaomi Mi9 performs. The chipset is by now a very well known component and various devices with the silicon will only ever differ by the software stack implementation by the vendor.

In Xiaomi’s case in the Mi9, I didn’t see anything particularly standing out for the phone, performing quite well but also not particularly distinguishing itself as being among the best nor worst performers amongst its Snapdragon 855 siblings.

PCMark Work 2.0 - Web Browsing 2.0 PCMark Work 2.0 - Video Editing PCMark Work 2.0 - Writing 2.0PCMark Work 2.0 - Photo Editing 2.0PCMark Work 2.0 - Data ManipulationPCMark Work 2.0 - Performance

Overall in PCMark, we see the Mi9 also perform averagely but very much within the top tier devices this year. It’s not quite as fast as the Galaxy S10 (S855) or the odd device like the RedMagic 3, but it performs better than say the LG G8.

Speedometer 2.0 - OS WebViewWebXPRT 3 - OS WebView

Similarly, to the PCMark results, the Mi9 ends up quite in the middle of the Snapdragon 855 pack in the web browsing JS tests.

Overall, my subjective experience with the Mi9 was excellent. Xiaomi seemingly very well integrated the OS-side boosters and the phone is very responsive when opening or switching between applications. Again I have to mention that while this performance doesn’t really stand out much amongst other flagship devices this year, it’s an incredible showing at the price range that the Mi9 is at. Other mid-range phones in this bracket, such as say the Pixel 3a and similar just can’t really compete with the Mi9.

Introduction & Design Machine Learning Inference Performance
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  • Andrei Frumusanu - Friday, September 13, 2019 - link

    That article is garbage, linear one axis VCM actuation isn't anywhere near the effect of real OIS.
  • eastcoast_pete - Friday, September 13, 2019 - link

    Thanks for the response! I agree that the lack of real OIS doesn't bode well for video. I also looked at the gizchina article mentioned by Redmyth here, and it seems to be more of a single axis autofocus than a multi-axis OIS. Still, if you have a chance, would like to hear how the EIS in this phone coped, especially in 4K.
  • Redmyth79 - Friday, September 13, 2019 - link

    Well I personally own or owned Galaxy S4, S5, S6, S7, S8, S8+, S9+, Note 9, LG G2, G3, G4, V20, V30, iPhone 6plus, 8plus and now a Xiaomi Mi 9. I can tell you that none are close to the photo abilities or the stabilization of the Mi 9! That's not hype but facts as I still have most my flagships today including the Note 9 which until the Note 10 was Samsung's top Note ever and it beats it day or night in photo or video and not by just a little bit.
    You do realize the IMX586 in the OnePlus 7pro somehow scored a 118 in Dxomark yet the Mi 9 scored a 112 but it beats it in 9 out of 10 photo reviews online especially in real world YouTube reviews. So technically it has the ability to stay with any flagship out today in photo but it's night cam is not as good as P30 pro I can promise you and pixel does extremely well there to. But the catch is that the Mi 9 has a very good ported version of Gcam online from XDA free of charge that makes its night shot awesome. Without it it still beats anything from last year minus the Pixel 3xl and this year it beats quite a few as well. But with Gcam it does great against any period but the P30 is still in my opinion in its own league.
    The Zoom on the P30 is unheard of!
    As for Video, check out many reviews on line especially YouTube but again check out Dxomark's review and stabilization rating on the Mi 9. It's anything but a one axis OIS lol. Xiaomi was the one that created 4 axis!
    Why would they abandon it on there flagship if something new was not better? Seriously? Think about that.
    Also I have a Pixel 3XL and a iPhone Max in house that I've tested the Mi 9 against personally and it beats them both rather well.
  • eastcoast_pete - Saturday, September 14, 2019 - link

    I actually looked at the dxomark article on the Mi 9, and they did indeed give it one of their best scores for video, especially mentioning the good video stabilization in 4K. @Andrei: could you give your review unit a quick test of its video capabilities, especially the stabilization, and let us know what's what? Thanks!
  • Bulat Ziganshin - Friday, September 13, 2019 - link

    In the first night shot Mi9 Wide and Night photos are swapped
  • airdrifting - Friday, September 13, 2019 - link

    Let me guess, this doesn't work in US? Why can't we have all the good things?
  • NXTwoThou - Friday, September 13, 2019 - link

    I'm using a Mi9 6/256 Transparent edition with AT&T in the US right now.
  • NXTwoThou - Friday, September 13, 2019 - link

    Sorry, 8/256. It's the china version and covers most of the bands. I haven't had any connectivity issues in Oklahoma, but I haven't done a lot of traveling.
  • Redmyth79 - Friday, September 13, 2019 - link

    The EU global version works perfect on AT&T or T-Mobile. I have it on both.
  • realbabilu - Saturday, September 14, 2019 - link

    Just been in the us for US open. It is gave LTE for T mobile

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