TechKnight: that's all I did was disable both. If I had them enabled, the only problem would be a hard lock- up.
Mem:
I tried the Det3 drivers(618's) immidiately after getting my new card, since everyone was raving about them initially (this was with 2x enabled). They definitely raised up my bench scores, but I was getting weird lock- ups that I never had before. ( at one point, after a reboot, my system acted like it no longer recognized my new card, and reverted back to the default display adapter- the display resolution looked like it was 100x100- absolutely huge) I switched back to the 532's, and all was back to normal.
The other night, I added a "Bios Savior" chip( allows you to switch between 2 different bios, or gives you a back-up) so that I could try the Beta 1006 for my Asus. For the hell of it, I tried the same reg hack I had tried many times before. To my suprise, after checking it with WCPUID, I saw 4x!! I can only assume it was because of the new bios? I have some major pc work this weekend, so I can't afford to hose my system: otherwise I would try to switch back and forth to get a definite answer.