Here's another cross-platform benchmark. UL Benchmarks created 3DMark Wild Life, a new test that will let you compare graphics performance across Windows, iOS and Android based devices. Wild Life uses Vulkan on Android and Windows, and Metal API on iOS devices.
3DMark Wild?Life, a cross-platform GPU benchmark
3DMark Wild?Life is a new cross-platform benchmark for Apple, Android and Windows devices. You can use 3DMark Wild?Life to test and compare the graphics performance of the latest smartphones, tablets and notebooks.
Wild?Life measures GPU performance by rendering a demanding game-like scene in real time. The faster the scene runs, the higher your benchmark score.
3DMark Wild?Life shows the advanced rendering techniques and post-processing effects that are possible on modern mobile devices. Wild?Life uses the Vulkan API on Android devices and Windows PCs. On iOS devices, it uses the Metal API.
Two ways to test GPU performance
Run the 3DMark Wild?Life benchmark to measure a device's ability to provide instant performance for a short period of time. This test mirrors mobile games in which the gameplay loop is a series of short bursts of activity.
The 3DMark Wild?Life Stress Test is a longer test that shows how a device performs under longer periods of heavy load. It mirrors mobile games in which the gameplay loop is a longer, more immersive experience. Instead of producing a single score, the main result from the stress test is a chart that shows you how the device’s performance changed during the test. This chart can help you understand how your device manages performance and heat during heavy use.