read it here
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In this card, NVIDIA used the 256Mbit Samsung K4J55323QF DDR3 memory chips
But a check of Samsung's website revealed that the memory chips were rated for a clock speed of 700MHz. Therefore, they provide the NV40 with a whopping memory bandwidth of 44.8GB/s! Wow!
NV40 soundly trashed both ATI and NVIDIA's former flagship cards. Believe it or not, it is MORE THAN TWICE as fast as either card! The R420 better be good or else
What can I say? The NV40 totally blew me off! Although we did not have much time to really test it, the few benchmarks we ran certainly tells us a lot!
ATI looks like it is in for a big surprise. NVIDIA has apparently learned from the mistakes made in the NV30/35 core and made the NV40 everything that we hoped it would be.
Across the board, the NV40 appears to be 40-100% faster than both the GeForce FX 5950 and Radeon 9800XT. Now, isn't that something?
What's more, our source tells that the beta driver is still not perfect. If his/her hints are anything to go by, we should see much greater performance from the NV40 once the driver is fully optimized.
Heh, looks like Nvidia is back in the game...