Heh, if we had the answers to those questions everybody else would too. At this point nobody knows what AMD has done to improve on the 3870X2 formula.Originally Posted by Unbornchild
ORBR and trinibwoy:
1. what is your explanation for the microstuttering in 3870X2 and do you expect it to be solved in 4870X2?
2. Is/will be crossfire in practice more efficient on 4870X2 than on 2 single 4870 cards?
3. If a game "X" isn't optimized for cross/X-fire in drivers, will the 4870X2 in that case automatically act as a single card (2nd gpu not being a hindrance), and performance never drop to below that of a single 4870?
Many thanks in advance for answering.
1. There are a lot of threads explaining the issue. Essentially the frames rendered by the individual GPU's are not distributed evenly either in terms of game time or the length of time they remain on-screen. This is an inherent issue with AFR and the only true solution is to have all the GPU's co-operating on the same frame (Supertiling, SFR etc). Of course you don't get the geometry processing scaling of AFR.
2. It should be. Rumours have it that they are switching to a faster on-board PCIe interface between the chips or doing something totally different. I see no reason why two individual cards should be faster.
3. If it is AFR based then yes, if the game is not AFR friendly you will have the same issues that we have today with multi-GPU scaling.
But like I said nobody has the answers at this point.
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