I have an Evga 7900GT CO but havent been able to find another one for SLI. So I got a Gigabyte 7900GT. It doesnt work. When SLI is enabled its BSOD galore. I was just wondering if I missed something because you're supposed to be able to use different brands with nVidia drivers 80.** and above. I know I can flash the BIOS of one of the cards but I dont want to void the warranty.