You have triple channel RAM up there that's meant for a socket 1336 board. You want DDR3 Dual Channel RAM 1.5v. Also that card is a 3GB card, and unless your running triple monitors it will actually hurt you on FPS in a lower resolution like 1920x1200. Also an 850w psu is under kill if anything. Google "gtx 580 SLI power consumption".
 

rccola2424

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Well, that's a nice motherboard, but i'm sticking with the one I have now.
Yeah, I just switched it out for the Corsair Vengance 2x4GB.
Yeah, that's why I think I might get it, I'm planning on overclocking the CPU to a min. of 4GHz
Nah, the Samsung Spinpoint drives are only 3GB/s, that one is 6GB/s, and costs not much more.
 

rccola2424

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Changed the RAM.
And speacking of which, I'm running two 24" widescreen monitors at 1080p. I'm sure.
And power? CPU = 95Watts(OC'd probably 110?)
Mobo = What? 100Watts?
Card =(approx.) 250Watts
HDD = insignificant amount
Disk Drive = ^
Fans = around 50Watts.
Overallwattage = around 600. Underkill?