Crisium:
..but what kind of profit margins it would have now that there wouldn't be this special deal and it would be widely sold? I mean it uses RV670 core and is artificially crippled meaning that this GPU is more expensive to make than those used in 3850 and 3870. One possibility is that this card uses failed RV670-GPU's which would also limit this release.
Nvidia will release G94 (D9M) core to this price point. It's clearly simpler and cheaper than G92 and basically fight would be over: 9600 GT would be like 25-30 dollars more expensive, but you would have 512MB memory and 256-bit mem bandwith AND performance very close to HD3870, beating HD3850 512MB. Also there will be Geforce 9600 GS which most likely is just lower clocked 9600 GT with 256MB memory.
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(offtopic: Also 9500 GT which is to replace 8500 GT, fighting HD3470/HD3650, would be almost 8600 GTS if you look at specs.. most likely they are with equal performance since there is little update to architecture)