Nvidia had to modify its GT200 chip in order to defy AMD's fast RV770. If the image material from the Xtremesystems forum is correct, AMD might have less work with improving the performance of the RV770.
That's 20 times what the 360 has in its GPU.
that's cause the 360 is a failure
The Xbox 360's GPU is about as slow as a 8600 GTX. The console is mostly reliant on it's CPU instead. Which has 3 cores and hyper-threading which brings it up to 6 virtual cores.
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