I don't believe that it'll be downclocked in the slightest. The ARES has two 8-pin connectors and a 6-pin connector and draws 351w so the whole "They won't want to break the 300w limit thing" is already crap. There's been what, one picture stating that EVGA has a dual GF110 PCB and a photo of the prototype? We need more evidence before making ANY assumptions. Links please.
I have been saying it all along, it is possible, But yes we need more evidence!
with a card apparently so close to being released i'm very supprised at the lack of info on it, Makes me think we have a while to wait yet. The gtx 580 is only like what 12 weeks old.