We posted a leaked Sapphire document yesterday and something I noticed were the black lines drawn through some of the details, mainly the stream processors on "Toxic ZX" and "Da Original" where it seems they had SP counts of 2304.
2304 is much higher than the 2048 stock, and according to PC Perspective, if this card were to come out, with the SP's running at 1225MHz, we could expect another 35- to 45-percent increase over the stock HD 7970.
If this were true, this could be a product AMD are keeping back from us all, waiting for NVIDIA to strike with their Kepler hammer. AMD have always been great at moving to another, smaller process and maybe this time with how good the 7000-series cards are, they struck gold. Decided to keep the treasure map to the true power of these cards, and if they've gotten there now... we could expect an AMD Radeon HD 8970 if it's true.
I'm sure you're laughing, why are we discussing an 8000-series. Well, if AMD had a near 50-percent increase with the extra SP's, they have all the right in the world to jump up a generation in numbers. NVIDIA could launch their GeForce GTX 780, but unless that's a huge jump in performance, it might not be enough to tackle this dream chip from AMD.
Let's play a waiting game now... as always, a pinch of salt is required.