What is the difference between EVGA GTX 580 and 590? I chose Hydro Copper, because I heard nothing else, but good things about water cooling. I looked at the specs of those two, and the only difference I see are CUDA cores and Memory Bandwidth. And I plan on putting the card on ASUS Crosshair V Formula, because I'm gonna use AMD Phenom II X6 1100T Black Edition. And also I plan on using, in the future, SLI, so I ask if GTX 590 that greater than GTX 580.