Charlie Demerjian is reporting the the upcoming AMD Radeon HD 5800 cards will feature 1600 shaders, double that of the current shader count of the 4850/4870 series cards.
With such an increase in raw processing power, the card should indeed feature the rumored 384bit bus - like the G80 - although AMD's R600 and R700 chips weren't really that bandwidth starved when compared with Nvidia's latest cards. As for processing power, it will surpass 2.5 Tera FLOPS per second easily, although sustained numbers will be harder to achieve.
AMD's replacement for the brilliant AMD Radeon HD 4770, which will be either called RV830 or RV840, will feature a bump to 800 shader processors and probably an even bigger increase in clock speed. I find it strange that AMD will be releasing a mainstream part this early, so we might see it fit the 5600 series instead of the 5700 series, leaving that for an update later in the life of this generation of DX11 cards.
Both parts look very appealing and will see performance figures towards the end of next week, although I'm very cautious about performance if AMD adopts a 256 bit GDDR5 memory bus instead of a 384bit one.
Source: SemiAccurate
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