In our case, we were using Unigine Heaven in Windowed mode at 1080p resolution with every setting bumped to the max. The easiest way is to increase the core frequency slightly and to test for stability. So, basically overclocking a mobile Ampere GPU doesn’t require a rocket scientist degree – you need to install MSI Afterburner or some other similar software that can overclock the GPU chip (most manufacturers have their own OC apps).
Unfortunately, we didn’t have plenty of time for the testing, but we were able to overclock the GPU and we have done some OC tests. How to overclock the GeForce RTX 3080 (165W)