I tried ATI x1800 XT CrossFireD (two cards) on ASUS A8NMVP board with Opteron 170 and 2GB RAM. Played Need4Speed Most Wanted and Batlefield 2, both games jittered alot on me. Returned Systemboard and both video cards and brought 2x SLi BFG nVidia Geforce 7800 GT OC 256 and ASUS A8N Deluxe nForce4 board. Both games worked MUCH better than with ATIs... And now they came out with X1900series!!! Darn! :shocked: