I'm looking to upgrade mostly for DX12 and better thermals (and better performance of course). I've been looking at a gtx 970 g1 gaming but I haven't seen that one compared to dual gtx 580s.It's just a guess but I'd say the 960 would perform comparable to one 580. In my opinion 580's in SLI would be way overkill when compared to 960. But then like I said it is only a guess.I wonder how the gtx 960 would stack up against gtx 580 in SLI?