Hi, I just installed GPUZ 0.7.9. In the "Graphic card" window, "PhysX" is not marked. In the graphics nvidia drivers control panel, it is activated. And with GPUZ 0.7.8, no problem. I think there is a bug with this new version My spec : MB : Asus Rampage Extreme (Bios 0601, chipset X48) CPU : Q9650@4GHz GPU : EVGA GeForce GTX580 1536MB GDDR5 OS : Windows 7 Ultimate 64bits SP1. Thanks.