GPU Performance

Along with the 10% increase in peak CPU clock speeds, the version of Snapdragon 821 in the OnePlus 3T also increases the peak GPU frequency to 653MHz, up from 624MHz in the OnePlus 3. This is a relatively modest improvement, so the corresponding increase in performance will also be rather modest as well. In the interest of merely verifying that performance has improved as expected, I've run 3DMark Sling Shot and GFXBench Car Chase on the OnePlus 3T.

3DMark Sling Shot 3.1 Extreme Unlimited - Graphics

3DMark Sling Shot 3.1 Extreme Unlimited - Physics

3DMark Sling Shot 3.1 Extreme Unlimited - Overall

The 3DMark graphics test actually doesn't see much of an improvement on the OnePlus 3T. It may be that I simply got an exceptionally good score on the OnePlus 3, but it is interesting to see such a large gap in the physics test, which should favor the OnePlus 3T with its higher-clocked CPU cores.

GFXBench Car Chase ES 3.1 / Metal (On Screen)

GFXBench Car Chase ES 3.1 / Metal (Off Screen 1080p)

In GFXBench Car Chase the OnePlus 3T shows a performance uplift of around 10% compared to the OnePlus 3. This is slightly higher than expected, but due to the truncation of results in the latest GFXBench this may be slightly exaggerated, which tends to happen when comparing devices that differ in performance by only one or two frames per second.

NAND Performance

In our recent review of the Pixel XL one of the problems we ran into was that AndroBench had been broken by the adoption of file-based encryption (FBE) in Android Nougat. AndroBench is the benchmark we use to measure storage performance, and since that time it has been updated with a new version that works on devices that use FBE. However, the results are not comparable to results from AndroBench 4, so going forward we will be using the AndroBench 5 test with a new data set for device results.

As always, our storage test examines the performance for random reads and writes using a 4KB transfer size, and sequential reads and writes using a 256KB transfer size. These settings are chosen to match what actually occurs when an application performs IO operations. Only one IO thread is used, which again mirrors how applications are actually designed in order to reflect the performance that will be seen in real usage instead of reflecting potentially higher speeds that the hardware may be capable of, but that will almost never be encountered in an actual use case.

AndroBench 5.0 - Random Read

AndroBench 5.0 - Random Write

AndroBench 5.0 - Sequential Read

AndroBench 5.0 - Sequential Write

In Androbench 5 the OnePlus 3T tops the charts. However, it's important to recognize why this is, particularly where write speeds are concerned. Most smartphones we review have either 16GB or 32GB of internal memory. The OnePlus 3 has 64GB, and this OnePlus 3T unit is the flagship 128GB model. With flash memory, assuming that you have some density for a chip, increasing capacity is accomplished by increasing the number of chips. Because SSDs and other flash memory devices utilize parallel writes to improve performance, increasing the number of dies can allow for greater performance by increasing the number of writes that can happen in parallel.

In addition to the larger amount of internal storage, OnePlus has also adopted F2FS for the filesystem, which is another source of performance improvements, particularly in the case of random write speeds.

With that in mind, the results from AndroBench actually aren't that shocking. In the write tests the 128GB model of the OnePlus 3T is well ahead of every other device, including the 64GB OnePlus 3. Read performance is also improved compared to the OnePlus 3, but not to the same extent.

System Performance Battery Life and Charge Time


View All Comments

  • TheinsanegamerN - Thursday, December 1, 2016 - link

    Marshmallow brought app permissions. Nougat brought multiple app mode. And lack of updates also means lack of security updates.

    If you dont understand why people want security updates, there is no helping you.
  • UtilityMax - Friday, December 9, 2016 - link

    But what I am saying is that updates are pretty sloppy with the big vendors as well. If you want monthly security updates, then your choice is Apple iDevice or Google Pixel. Reply
  • powerarmour - Monday, November 28, 2016 - link

    Awesome, just what this site needs, another smartphone review... Reply
  • tipoo - Monday, November 28, 2016 - link

    Or another comment complaining that a new review to dig into isn't entirely catered around what said commenter wants reviewed? Especially when there's not much excitement on the PC hardware front right now. Reply
  • Ian Cutress - Monday, November 28, 2016 - link

    On the twenty articles currently on the front page, only two are smartphones. Is 10% too much? There are currently two SSD reviews, several press event live blogs, external storage, GPU market analysis. What's the best ratio for you? We have editors dedicated to each area, they don't just chop and change with what they want to do. Reply
  • amdwilliam1985 - Monday, November 28, 2016 - link

    Kind of off topic, but when is the review for the new MacBook Pro coming out?
    I would love Anandtech to kiss its ass and tell me how great it is. I'm holding onto a 2011 MacBook air 13", desperately need an upgrade to this year's 13" MacBook Pro. I'm leaning towards the 13" non-touch bar option, mainly due to cheaper price(I'm upgrading to 16GB ram with the money "saved" by going non-touch) and higher battery capacity.
    Please do a section to compare the 2 13" models, touch vs non-touch bar, I'm sure there are so many people in the same boat as I am, trying to decide which model to go for. Maybe focus more on performance(their peak frequency are similar), battery and etc... instead of youtubers focusing on how cool emoji bar is -_-;;
    Thanks in advance.
  • powerarmour - Tuesday, November 29, 2016 - link

    Well if you want an ass kissing review, you've come to the right place. Reply
  • Meteor2 - Tuesday, November 29, 2016 - link

    Anandtech doesn't seem to be reviewing laptops at the moment. Hopefully they'll recruit one or more new editors soon. Reply
  • Ranger1065 - Friday, December 2, 2016 - link

    Anandtech doesn't seem to be reviewing much of anything recently...situation normal. Reply
  • UtilityMax - Wednesday, November 30, 2016 - link

    I think having a new smartphone review is a lot better than another mechanical keyboard review... Reply

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