My problem is that when I use the 66.93's, after enabling SLI mode, upon a cold reboot the desktop comes up and then it detects my secondary card and then goes blank. I have to reset the computer just to get it back. With the 71.24's, after enabling SLI mode, and another cold reboot, SLI mode disables and I have to reset again. I have the EZ card set for dual, and SLI mode in the bios set to SLI. All in all, I can get SLI mode but only if I don't shut down the computer without the 5v going to the board. So it may be a small problem, but it is irritating. I never installed the cards seperately when I built this system. I just did everything all at once. I am going to try those 67.03's and hopefully I can fix this. Any suggestions would be great.