Re: First Build - Need Help
Another nod for a Corsair / Seasonic PSU. Stick with 1 card, you'll get maybe 20% increase at best, at double the cost, with twice the power consumption and increased heat. 1 powerful card > 2 lesser cards.
Might as well get a Phenom II x4 now if you're planning on doing it, $50 difference now, $150 if you do it later. The 945 and 955 are both solid CPU's at a fair price (about $150).