Quote Originally Posted by hurrdurr View Post
As long as performance / watt doesn't increase (which it hasn't in Barts) you can't get more performance at 300 watts. The only thing that would be increasing performance would be CF scalability, which did increase about 10% in Barts CF situations.

BTW a single 5850 is 150W whereas a 5870 is 180W. Two 5870's in 5850 clocks and voltage would be around 160W; which would make 320W, but because one PCB's worth of energy is saved it's 300W.

There is no way AMD is putting two Cayman's in the Antilles unless:

1. Performance/watt has increased incredibly, so incredibly that a 6950 consumes the same power as a 6870 while performing about 25% better.

OR,

2. They won't be caring about the 300W limit.
perf per watt has always favored lower clocked cards because you can reduce voltages too. mobile gpus can see 30+% better perf/watt because they run so low.

even if a 6970 is at 900mhz, the 6990 can be 600mhz if they need to be. and you want it to be so you can just turn it up to 900mhz when u get one