Originally Posted by starchaser
I'm having the same issue with my ASUS P6T mainboard and two 8800gt's in SLI. After about 2 minutes the game will freeze. I've tried running games in both Vista and XP, but they still crash after a few minutes. I decided to take the ASUS board back and exchange it for a GIGABYTE EX58-UD4P, but the exact same thing still happens. I know the video cards are good because they worked perfectly for 2 years with my old board, so I definately say it's a chipset issue. I hope there's a fix for this soon.
So after more troubleshooting, I discovered the freezing issue was actually caused by one of my video cards, and not the mainboard. After RMAing the bad card, it no longer crashes in SLI. However, now I'm seeing horizontal flickering lines in all games that run in SLI , which I'm pretty sure has something to do with vsync. The new card is slightly overclocked from the factory, but automatically downclocks to match the speed of the reference card.