Regarding my system... I didn't really know of anyone close that have a power supply that may work with it. I tried it on my other computer and just won't load the driver (whether it's the 8.8 or older catalyst driver).. Thinking power issue... On my main pc, however, here's the brief spec:

Q6600,ASUS Rampage Formula X48 MB,8GB Mem,VistaX64,3HDD Raid0,2x screen 22"/24", 5 wow instances

Power supply is rated at 62A of combined load on the 12v rail: http://www.newegg.com/Product/Produc...82E16817153043. "Should" be able to handle 1 4870x2 as I looked at the power consumption at one point peaking at 40A..

Edit: The first night was awesome! Hence my sentiments about giving it up... My FPS on main 16x10 (22")in shat was at high 30s on prime time (vert sync on) w/ 4 clones running at same res on 24" split evenly into 4 windows. Clones maxbkfps are at 20. Now with the gtx280, i get about 20ish FPS, mid 20s max in Shat primetime..