Speculations have been going around that there will be an Evergreen part that sports about the same specifications as the current RV770/790 part, but added DirectX 11 support. We have it on good authority that this is very much the case, we're just not entirely sure which of the chips it is, but a hard guess would be that RV830 is the chip launching with the 800 shaders, 40 TMUs and 16 ROPs, and of course DirectX 11. Memory support we don't know yet. This should put the performance part at a much higher shader and texture unit count, perhaps around +100% (100% guess).
The same source has indicated that AMD will not use AFR (Alternate Frame Rendering) with the X2 part, but instead go with SFR, which we assume is a much better optimized version of the Scissor Frame Rendering mode. SFR has great potential, and even though previous attempts have not been very successful, ATI is very excited about this one.
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RV830(?) = RV770 +DirectX 11, X2 part to use SFR
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