Brand new ASUS GTX670. Bought it from Newegg and the very next day found a TOP version elsewhere and didnt want to pay restocking fee so listing it on ebay.
http://www.ebay.com/itm/200779643010?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
Ok gonna try to disable core 3 today and see if it comes back. Is this perhaps a problem related to XP that would be easily solved by going to Vista and running the smp client or notfred's vm?
Running window xp 32bit on a Q6700. 4 instances of F@H as a service on the quad. The only thing that changed is the video card. Before installing it, I removed the nvidia drivers and removed the gpu client. Installed the new card and reinstalled the newest drivers and reinstalled the gpu client...