paddys09 :
Its Gonna be a game changer for the mid range cards! ........Get back in your hole AMD
Terribly naive statement to be making.
AMD releases its Southern Islands ("GCN") architecture to replace the old VLIW4 architecture, it is radically new and uses the 28nm process. Nvidia witholds GK104, the early benefits was that the Tahiti and Pitcairn comprehensively beat Fermi and VLIW4 at high and maintream level, AMD then prices the chips concurrent to Nvidia's pricing and then the GTX 580 was $550 for a Tahiti based card that comprehensively beats the 580 gave carte blanche to AMD to price as high as they did, along with the mainstream pitcairn cards. All is well AMD have the fastest cards out with Nvidia holding on its release of the anticipated GK104. Early concerns with AMD cards was that once rumours came out that the GTX 680 ran off a 1k core clock with turbo boost, the 7970 looked very sandbagged with a modest 920mhz core clock on vanilla cards, the other concern was that AMD had not released exclusive drivers for the GCN based architecture which had performance problems....AMD say hold on we are working on it.
GK104 in the GTX 680 releases and it is a beast of a card, there is a disparity in performance with the 7970 being very underwhelming, Nvidia go one better and release the GTX 670 which intially beats the 7970 as well. AMD reacts by dropping prices initially but come July release reworked tahiti cards baring the GHZ edition monika along with Catalyst 12.6 and 12.7beta which significantly improves the Tahiti cores to match the concurrent GK104 cards. Reviews are out and show that the 670 matches the 7950 and the 680 matches the 7970 cards all within margin of error.
AMD has a few advantages still, first they sold high level cards that can be flashed to newer tahiti and pitcairn bios, meaning they have sold a lot relative to Nvidia. Second Nvidia is a no-show with the 660 still due in the mainstream market with the HD 7800 cards running riot against the older GTX 570 and 580 at a cheaper cost.
The long and short of it is that whether you are team red or team green there is little between them appart from Nvidia having a dual GPU out which AMD are yet to produce. AMD by early release laid down the benchmark which Nvidia only need to just beat which they did. I am not a fan of sequential releasing as all it does is see-saws from AMD to Nvidia to AMD and back, there is no more direct competition where you had to pre-empt your competitors design, now its merely sandbagged releases.