From http://wccftech.com/:
However, the previous leak for the 2304 GCN core Polaris 10 - R9 490 - showed the card outperforming the GTX Titan Black and the GTX 980, despite a reported 800mhz clock speed. Since 14nm FinFET pushes frequencies way beyond what we've seen with 28nm we're likely looking at 1200Mhz+ clock speeds out of production Polaris chips. Based on the performance we're seeing at 800mhz, that puts the cut down Polaris 10 chip that we've seen, a likely R9 490 candidate, in excess of 15% ahead of the R9 Fury X and GTX 980 Ti.
So if the R9 490 series has at least 15% more performance than the current flagship models, likely the GTX 1080/1070 will perform similarly. If these estimates are correct then the next gen flagship models set for Q1 2017, Vega 10 and GP100, will definitely be 4k/60FPS capable cards (will likely be f**king expensive too due to the high cost of HBM2 VRAM).
Nvidia has been very quiet about Pascal recently. No demonstrations and no official word on specifications or capabilities. Many people believe that the Pascal series, like the current Maxwell cards, will lack asynchronous compute capability in DX12 games. AMD has hit Nvidia pretty hard in all DX12 titles that have been released (Hitman, Ashes of the Singularity, Quantum Break). If Pascal cannot keep up with Polaris due to a lack of async compute, Nvidia will have to eat the costs of using brute force performance to close the gap (ie. lowering prices on higher tier cards).
