DV^McKenna, on 12 March 2012 - 10:40 AM, said:
If anything the 78** is probably over performing, and i think perhaps AMD has kept its 79** performance down on purpose (thats not saying i think they intended the 78** to do what it is doing.).
They'll wait and see Kepler's top end then release a "driver fix" that boosts 7970 performance to either in line or above Kepler.
Looking at the benchmarks i think there is a fair amount more to come from the 79** series.
I think the performance has been kept down perhaps to sell our the 6xxx series chips as they would appear to many people to be a better choice / $$$. Then driver updates come and the 7xxx series sells like nuts.
Or it may be AMD is having issues with the larger memory bus?... I wouldn't think so but eh it might be possible?...
It might also be a psychological ploy in a sense, Nvidea releases the gk104 as the 680, holds out on their higher end chips that would be uber $$$ and then... AMD releases a driver update, and kils the 680 on performance.
Now if Nvidia wants to release a higher end chip, What'll they call it? Even if they called it "680ti or 680se" then there will still be buyer confusion to some extent and therefore AMD has an upper hand, holding a card that falls in between the two cards and the ability to say it outperforms the base numeric naming scheme causes an average, not reading every tech review out there consumer to think that AMD has the better card for more of the time. Albeit at that price point such a thing wouldn't make sense.
At the same time, it would give AMD Fanbois (such as myself) a chance to laugh at Nvidia. "Kepler unbeatable? 7970 lol u mad?" type things.