I use a SLI set composed of two GeForce 9600 GT, by XFX, and I think one of them is starting to die. GPU-Z don't accuse anything, but both Furmark and EVGA PrecisionX say that one of the cards is seriously underclocked (normal 700 MHz, showing about 45 MHz). I was even encountering trouble to starting up Windows, until I switched positions of the cars or started up with only one on the motherboard. This started recently and I want to make sure no software or driver (I recently installed the 341.44 driver, so it's one of my suspects) is causing this. Any thoughts?