GPU Performance

Gaming performance in a smartphone is dictated by three aspects: Firstly, naturally the hardware itself and how efficient and performance the GPU and Soc are. Secondly, the hardware design of the phone and how well it was designed to dissipate heat from the SoC to the whole chassis of the device, and secondly, the software thermal throttling configurations and how the vendor has programmed the thermal behaviour of the phone, such as how hot it allows the phone to get. The results here can be all over the place depending on the vendor implementation, and it’s amongst the more interesting tests for this article.

In the 3DMark Physics tests, we’re seeing largely a CPU load whilst the device is thermally constrained by it being heated up by the GPU load. The results we’re seeing here are very spread across the different vendors. One result that does stand out is the Sony Xperia 1 which has some very bad throttling behaviour on the CPU, reaching only 40% of the peak performance of when the device is cold. The Black Shark 2 is also interesting as it showcases uniquely limited peak performance compared to the other Snapdragon 855 devices, possibly pointing out that Xiaomi is implementing a hard top CPU frequency cap when under GPU load. The rest of the device vary in their sustained performance results. The best S855 device is the OnePlus 7 Pro, which is only showcasing a 15% degradation.

The two top devices are the OPPO Reno 10x, as well as the OnePlus 7 Pro which showcase nearly no throttling at all. The Xiaomi Black Shark 2 showcases some pretty disappointing results, losing almost 45% of its performance when hot.