I can tell you that the GTX295 isn't just two GTX260 or GTX280 cores glued together. It is a unique core and uses a brand new memory interface technology, as well as intra core communication setup. We are also separating the delta clock systems entirely from the cores, allowing for direct core communication while keeping the shaders independent. This will remove that dual card "stutter" you sometime hear about on dual card solution such as the 9800GX2 and 4780/4750 X2 cards. In short, the card will work more like one card instead of two cards.
If I think of anything else, I will tell you guys.
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