The Raw Benchmark Numbers

Section By Andrei Frumusanu

Before we go into more details, we're going to have a look at how much of a difference this behavior contributes to benchmarking scores. The key is in the differences between having Huawei/Honor's benchmark detection mode on and off. We are using our mobile GPU test suite which includes of Futuremark’s 3DMark and Kishonti’s GFXBench.

The analysis right now is being limited to the P20’s and the new Honor Play, as I don’t have yet newer stock firmwares on my Mate 10s. It is likely that the Mate 10 will exhibit similar behaviour - Ian also confirmed that he's seeing cheating behaviour on his Honor 10. This points to most (if not all) Kirin 970 devices released this year as being affected.

Without further ado, here’s some of the differences identified between running the same benchmarks while being detected by the firmware (cheating) and the default performance that applies to any non-whitelisted application (True Performance). The non-whitelisted application is a version provided to us from the benchmark manufacturer which is undetectable, and not publicly available (otherwise it would be easy to spot). 

3DMark Sling Shot 3.1 Extreme Unlimited - Graphics - Peak 

3DMark Sling Shot 3.1 Extreme Unlimited - Physics - Peak 

GFXBench Aztec High Off-screen VK - Peak 

GFXBench Aztec Normal Off-screen VK - Peak 

GFXBench Manhattan 3.1 Off-screen - Peak 

GFXBench T-Rex Off-screen - Peak

We see a stark difference between the resulting scores – with our internal versions of the benchmark performing significantly worse than the publicly available versions. We can see that all three smartphones perform almost identical in the higher power mode, as they all share the same SoC. This contrasts significantly with the real performance of the phones, which is anything but identical as the three phones have diferent thermal limits as a result of their different chassis/cooling designs. Consequently, the P20 Pro, being the largest and most expensive, has better thermals in the 'regular' benchmarking mode.

Raising Power and Thermal Limits

What is happening here with Huawei is a bit unusual in regards to how we’re used to seeing vendors cheat in benchmarks. In the past we’ve seen vendors actually raise the SoC frequencies, or locking them to their maximum states, raising performance beyond what’s usually available to generic applications.

What Huawei instead is doing is boosting benchmark scores by coming at it from the other direction – the benchmarking applications are the only use-cases where the SoC actually performs to its advertised speeds. Meanwhile every other real-world application is throttled to a significant degree below that state due to the thermal limitations of the hardware. What we end up seeing with unthrottled performance is perhaps the 'true' form of an unconstrained SoC, although this is completely academic when compared to what users actually expereience.

To demonstrate the power behaviour between the two different throttling modes, I measured the power on the newest Honor Play. Here I’m showcasing total device power at fixed screen brightness; for GFXBench the 3D phase of the benchmark is measured for power, while for 3DMark I’m including the totality of the benchmark run from start to finish (because it has different phases).

Honor Play Device Power - Default vs Cheating

The differences here are astounding, as we see that in the 'true performance' state, the chip is already reaching 3.5-4.4W. These are the kind of power figures you would want a smartphone to limit itself to in 3D workloads. By contrast, using the 'cheating' variants of the benchmarks completely explodes the power budget. We see power figures above 6W, and T-Rex reaching an insane 8.5W. On a 3D battery test, these figures very quickly trigger an 'overheating' notification on the device, showing that the thermal limits must be beyond what the software is expecting.

This means that the 'true performance' figures aren’t actually stable - they strongly depend on the device’s temperature (this being typical for most phones). Huawei/Honor are not actually blocking the GPU from reaching its peak frequency state: instead, the default behavior is a very harsh thermal throttling mechanism in place that will try to maintain significantly lower SoC temperature levels and overall power consumption.

The net result is that that in the phones' normal mode, peak power consumption during these tests can reach the same figures posted by the unthrottled variants. But the numbers very quickly fall back in a drastic manner. Here the device thottles down to 2.2W in some cases, reducing performance quite a lot.

Benchmarking Bananas: A Recap Getting the Real Data: Kirin 970 GPU Performance Overview
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  • arpit - Saturday, September 8, 2018 - link

    Benchmarking these phone after few times will degrade its SOC due to overheating. Idk why Huawei/Honor has resorted to using this cheat tricks. Reply
  • LemmingOverlord - Tuesday, September 11, 2018 - link

    I think the real questions Andrei and Ian should be asking is whether the devices are detecting not only benchmarking software but also popular software (games included) that people use for extended periods. If that is the case, the device's behavior will shorten its lifespan over a shorter amount of time. Reply
  • ashraf mahdy - Friday, February 8, 2019 - link

    I know this thread is old but I wanted to share my story as well, so yesterday EMUI 9 updated arrived for my Honor Play in my country. bringing the "performance mode" toggle from the battery settings. anyone watching "Gary Explains" on youtube knows that Kirin 980 can have increased performance turning on "performance mode" in the battery settings.
    before updating i ran a few antutu benchmarks, my scores were 206-210,000. my highest was 212,000. using antutu sensors my Hottest CPU & battery were 41-43C
    right after updating I was getting 165-170,000. and my lowest score was 153,000. which is basically SD660 & Kirin 710 Performance, but my phone was not getting warm at all, like max CPU & Battery was 32C after 3 tests. at this moment I was like "HUAWEI THOSE LYIN CHEATIN BASTARDS" then I remembered Performance Mode, Turned it on, and BOOM, ran 3 Tests, was getting around 206-210,000. with my LOWEST Score being 198,000 after 4 looping tests and my SoC & battery were peaked at 41C. and after letting the phone cooldown to around 19C I ran a final test and got 216,000 with SoC & battery at like 36C.
    my point is as follows.
    SoC sustained performance vs peak can vary by as much as 20,000 on antutu, it all depends on the phone's cooling ability. the Mate 10 Pro has thermal paste on the Kirin 970. the honor Play does not. (check Jerryrigeverything for teardown of M10Pro).
    "performance mode" is not "cheat mode". the kirin 970 may not be as efficient as SD835 but it does manage to go neck and neck. it's like desktop GPUs. the RX 580 vs 1060.
    yes in phones batteries are the main culprit. but that peak power draw only happens when gaming, and let's face it, no one games for 1-2 hours on their phones, it's more like 2-3 games of PUBG mobile or a few fifa soccer matches. 30mins or so.
    so Huawei are shady af yes, Qualcomm's SD is better yes. but kirin is respectable as well.
    Reply
  • jessicacoles - Saturday, December 12, 2020 - link

    https://www.shampooadvice.com/ Reply

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