Well, GTX 580 can be really good, especially for people like me. GTX 480 was not enough to replace OCed 260 SLI, but GTX 580 is. I decided to go 1-card now. SLI means great performance, but not all games support it, and you can occasionally get stuttering/jitter in some of them. Time to wait for a frame is also higher. Still, I'm not going to get GTX 580 till I see good review, and possibly a comparison with 6970.