Sorry guys I'm a total noob at this. Is the 650W not enough? I've read VERY good reviews on the antec earthwatts. I really doubt I'd try x-fire (again, I'm a noob) since the single 6950 seems like it'd be enough for the majority of games for a long time (once again I'm only planning on playing BF3). I would be interested in overclocking, however.