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
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  • igavus - Monday, November 28, 2016 - link

    I hope that history will start putting buttons on the right side though, cause the left side is firmly inside the the wallet and thus inaccessible. One could make the wallet open up on the wrong side.. but, why?! Reply
  • negusp - Monday, November 28, 2016 - link

    ...left-handed people? Reply
  • greyhulk - Monday, November 28, 2016 - link

    Wallet? Who the hell puts their phone in a wallet? Reply
  • MonkeyPaw - Monday, November 28, 2016 - link

    I think the poster means those wallet cases. For people who want a bulkier phone, all while looking like they are talking into their wallets! I guess it might be more practical if one also wields a purse? Reply
  • jaspreet - Tuesday, November 29, 2016 - link

    My office collegue got a pixel xl and has been showing off as to how good it is . I will be sending him this article which clearly shows that pixel xl is a much much poorer phone than a almost half priced One Plus 3T . Time to shut him up :) Reply
  • igavus - Tuesday, November 29, 2016 - link

    Well, it's the least bulky option of carrying everything I need in one item. Separate wallet, card holder, phone, key chain - even more bulk. As for talking to my wallet, you get used to it :) Reply
  • Meteor2 - Tuesday, November 29, 2016 - link

    I've had several different magstripe cards -- hotel key cards, shop loyalty cards, a credit card -- wiped, presumably by EM radiation from the phone, in wallet cases. Lesson learnt! I do use a wallet case though as they provide all-round protection without ruining the display with a screen protector. Reply
  • skeeter1234 - Thursday, December 01, 2016 - link

    Wallet cases have magnetic strips to keep the case closed.....bad for credit cards or anything close by with a mag strip.... Reply
  • leexgx - Wednesday, January 18, 2017 - link

    not a problem in the EU/UK as we use chip and pin (my mag strip mite be working mite not be I don't know nor care), but damaging the screen protector or the screen it self I have seenhappen in these type of cases Reply
  • lazarpandar - Tuesday, November 29, 2016 - link

    Lol what wallet are you talking about you spaz Reply

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