Mine runs at 1020 mhz right now, with the core at 520 and sdram at 580, over voltage 5, gpu ram 384, with heat sinks and it stays at 59.9 degrees celsius after stresstesting it. Too close :P
I tried to go higher but it froze so I pushed it down a notch so that’s why I have so uneven figures.

I still can’t play ps1 games at full speed though. Most 2D games I’ve tried like Suikoden and Strikers 1945 runs at 60fps but 3D games usually runs at 40-50fps depending on how much is going on, Raiden 2 goes down to 45 fps at times too. I still have some screen resolution configurations to try out though so hopefully I can get it a little bit better.