jjb, I know you had a bad time with CFX but you've got to get over it! Many people have zero issues with crossfire like myself. And you know what? Just one week ago I built a PC for a buddy with an i7 2600k @4.6ghz, Asus Maximus Extreme-Z mobo, Corsair HX1050 PSU, 16gigs 1600mhz RAM, and an eVGA Classified GTX 590. It stutter like crazy in every benchmark. Microstutter is a universal thing that either will or will not affect a multi gpu set up regardless of vendor.