Xfx 650w not cutting it

skramps

Distinguished
Aug 19, 2010
13
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18,510
so, i did a search before i posted this and from the few threads i found it seems like the general consensus is that the XFX 650w XXX psu will handle 2 5870's in crossfire. yet every time i try my system wont boot into windows. I've tried each video card in single setup and they both work fine. I've tried only running 1 hard drive while i have them both plugged in and still it wont boot, but as soon as i unplug the second card its back to normal.

here is my system specs

Asus Sabertooth x58 mobo
Intel i7 980
Cooler Master V6GT heatsink w/ dual fans
Corsair Dominator 6g (2gx3)
Asus DVD/CD burner
2 Gskill Phoenix 125g SS drives
2 WD 1TB drives
2 XFX 5870's
XFX 650w XXX PSU
HAF X case with 4 fans

The reason i have 2 video cards, 2 solid state drives, and 2 1tb drives is because their were in separate computers and I decided to consolidate them into 1 case since i no longer work overseas