Originally Posted by i SPY
My prediction , GK104 will turned out to be another turd just like G104/G114, full of flaws and it will rely on the driver sw level too much, just like any G104/G114 so far.
It will go neck and neck with 7950 or land somewhere in between 7950-7970, sometimes beat 7970 in TWIMTBP titles.
GK100, now this is where its at (true next gen), kinda like what G110 should have been from the start, but that's apparently still far far away.
I don't know the codenames for keplar very well but if you're referring to the GeForce 680, it'll be considerably faster than the 7970. nVidia does have a history of nearly doubling previous generation performance. GTX 480 was almost double what the GTX 280 delivered, GTX 280 was almost double the 8800GTX, so on and so forth. When nVidia goes from one generation to the next they are pretty good about doubling the performance.
However I'm sure AMD has a refresh in the works that'll launch not too long after Kepler's top-end part (within a month or so) that'll be able to keep up. It's going to be an odd, but interesting, year.