I'd like to see some undervolted results, I know I gain a lot of perf/w by doing so with my 1.25v card. Even 1100/1500 on my 6+8 is undervolted from 1188mv to 1156mv.
Also I know from experience that a hot card like the R290X is requiring more voltage and using more power than it would be if it was kept cooler. The real question there is if aftermarket cards can keep up with its amazing power consumption scaling with voltage.
Kepler just seems more efficient, and it seems to scale better in MHz than AMD. R290X seems to scale worse than Tahiti in this respect. I think the combination of higher power, higher voltage, higher operating temps, more heat output, and lower MHz headroom leads to the 780 looking like the better overall card for 1600p or less, while the R290X still looks like the choice for people going 4k.
Well,I wouldn't call the 780 more efficient or anything before aftermarket 290x's are released (Nor will I call the 290x more efficient of course,I just can't come to a conclusion just yet).So far,we've been able to compare the best the 780 can do (HOF,Classified etc) to probably the worst the 290x will be able to provide (Reference).I say that until we compare a Toxic or a DirectCU or a Vapor-x or a Lightning or whatever to the aftermarket 780s,we can't really draw a conclusion.
Don't forget that,at an operating temperature this high (95C?Jeez!),physics takes over and the properties of the semiconductors change,at least ever so slightly.I am quite sure that with a proper cooler,the 290x will run at least below 75-80C and at quite lower voltage.The power consumption is bound to go down,while performance will go up.All that remains is to see how much things will change.That is unless I'm totally wrong,which I doubt.
Having said all that,are there any news/rumors about when AIB 290x models will be out for sale?I've been holding my PC purchase back for at least a month while waiting for the 290x to come to the market.However,I'd rather go with a 280x than buy a reference 290x.Both would be a humongous upgrade over my current 4650.And no,I'm not an archaeologist.
