lol i rather get 2 GTX 580 for cheaper price overclock and get much better performance. Not that you need to overclock these beasts lol For that price i rather get Water cooled 2 way SLI GTX 580 get insane clock speeds with good temps and still save money lol
Just to let you know, Nvidia won't be releasing a consumer set of GTX 6xx GPU's. Those are for OEMs on the same fab as the 5xx in order to get the OEM's moving. It'll be kinda like the skipped 3xx series as before.