The Xiaomi Mi MIX 2S Review: Fantastic Overall Value
by Andrei Frumusanu on June 29, 2018 8:00 AM EST- Posted in
- Mobile
- Smartphones
- Xiaomi
- MI MIX 2S
GPU Performance
On the GPU performance side, I’m expecting again very good results as we’ve investigated the performance of the Snapdragon 845 and the Adreno 630 GPU in depth in our Galaxy S9 review. The Mi MIX 2S should not differ too much from the S9 – apart from maybe slight differences in thermal dissipation capabilities or maybe different thermal throttling configurations.
In Futuremark’s Sling Shot 3.1 Extreme Unlimited Physics test (I’m hoping for shorter benchmark names in the future), the Mi MIX 2S actually performed quite a bit less than the Galaxy S9+. This test is mostly CPU bound, and the only explanation I have here for the results is that Xiaomi must have had made changes to the thermal balance between CPU and GPU and limited the CPU performance more in 3D workloads.
In the graphics score results of the test, the MIX 2S performed a lot closer to the Galaxy S9, posting identical peak performance figures while having only slightly slower sustained performance. Unfortunately we’ve verified both with a second Galaxy S9+ as well as now with the Mi MIX 2S that the sustained performance degradation of the Snapdragon 845 was not an isolated case. This makes sense given that the increased peak performance of the Adreno 630 seems to have come from increased power draw, exceeding the 5W figure in ALU heavy workloads. As naturally phone thermal envelopes can only sustain 3-3.5W SoC TDPs, performance has to go down over time to keep temperatures in check.
Manhattan 3.1 Off-screen performs again nearly identically to the Galaxy S9+, topping the benchmark scores.
T-Rex also matches the Galaxy S9+. The performance of the S845 devices here seems to be lower as the benchmark is running at high fps figures and demanding a lot of memory bandwidth – it’s possible that the increased memory latency on the S845 chips is hindering the performance and efficiency of the chip compared to the S835 in this case.
Overall, in terms of 3D performance the Mi MIX 2S leaves little complain about. While the increased peak power is of a concern, I’ve only found few games and real scenarios where the higher GPU frequencies are actually currently needed. Over the coming months I’m also planning to expand the GPU testing methodology and among other things try to introduce a “real game” battery or power draw test that doesn’t actually require peak performance, but rather maximum efficiency for a given workload. We’ll also hoping to introduce Vulkan GPU tests from Kishonti as well as evaluating the recently announced Basemark GPU.
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Arbie - Friday, June 29, 2018 - link
No microSD, no sale. I want to easily load and swap sets of media files. The lack of a standard headphone jack hurts too.Lolimaster - Friday, June 29, 2018 - link
Seems phone makers don't get it. Why depende on internet, when you can have tiny sets of mSD's on your wallet, pocket, backpack with different kind of content (favorite music, cartoons, anime, manga, popcorn/hentai)Destoya - Friday, June 29, 2018 - link
Maybe I don't get it either. I admittedly have a S8 with a 128GB SD card in it but I would have no problem going to a phone with 256GB internal storage and no SD card. I have something like 2000 320kbps songs, a bunch of games/apps, and that still is only around half of my total storage. If I really wanted to I could fill the rest of the storage with something like 40 hours of high-quality 1080p rips. More likely if I watch something on my phone I just connect to my Plex server back home with its terabytes of content.SD card support on android has always been a mediocre experience; it certainly works but has always felt tacked on at best. OTG SD/flash drive readers cover most of the remaining use-cases anyways.
FunBunny2 - Friday, June 29, 2018 - link
"Seems phone makers don't get it."their all trying to emulate Jobs: tell the consumer what s/he needs irregardless. so far, he's about the only one to pull it off.
close - Saturday, June 30, 2018 - link
I'm willing to bet their surveys showed people will complain but still buy the phones because the SD slot isn't a real *must* have. I've heard too many people claim "128/256GB is not enough" only to fall flat when they realize how much music fits in there, how many pictures, videos, etc. And the argument "my 4K videos, my lossless audio, my RAW pictures" is about as realistic and compelling as "but my mouse, my Excel, my coding project" on the phone.If you consider how much of that data has to be with you at any time it really stops making sense to insist on memory cards. Especially since they don't excel at reliability so having your only copy on that SD would be a monument of ignorance euphemistically speaking.
Over the years I heard people screaming "no [whatever] no buy" 1000 times. Yet most of them now rock a phone with no replaceable battery, no physical keyboard, no SD slot, no headphone jack, no physical button, no week-long battery, notched screen, etc. They *ALL* pull it off ;).
serendip - Saturday, June 30, 2018 - link
64 GB internal flash with no MicroSD isn't enough for me, especially when the user-accessible space is more like 45 GB after subtracting system and data partitions.Holliday75 - Tuesday, July 3, 2018 - link
How many people do we know in real life that would even know their phone has a SD slot or not? I for one can only think of a couple of cousins and maybe on uncle who would know, and even then I doubt they care.I'm in IT professionally, but even I have no use for it. How big is the market for such items? Sounds great to have and I'm sure if you told people what it was and asked if they wanted it they would mostly say yes, but in the real world I see very little use of it.
ianmills - Friday, June 29, 2018 - link
Go cheaper and you can have what you desire. Xiaomi Redmi note 5 does all that for ~$200djayjp - Friday, June 29, 2018 - link
Apparently NAND performance doesn't matter........Pallmei - Friday, June 29, 2018 - link
400MB/s read, 160MB/s write on my Mi Mix 2. I am sure 2s is no worse and AFAIK they haven't upgraded the specs either