Hi everyone! I'll be getting another GTX 580 to play around with SLI since I found a deal on it - I'm wondering if my power supply will be able to handle it for just for a few benches, and maybe a few sessions of Battlefield 3. My specs are to the left, and my power supply is the XFX Core Edition Pro 650W with 53A on the +12V rail. I bought it around last September. I know I'll be pushing it, but I'm wondering if it'll work for just a little while. Thanks!