It's seems strange since my Diamond 4870 can run Furmark and GPU Caps Viewer GPU Burner stable for 10 minutes (I haven't tried more) at 800/1000 Core/Mem. But in Crysis VPU Recover would constant kick in every 5-10 minutes. Stock speed is still fine, though. Anyone have any idea ? Edit: My 4870 had been modded with Fastmix's Powerplay BIOS. Max core temp I could reach at 100% load in GPU Caps Viewer is 84-85C.