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With respect: Have you actually measured performance or are you merely quoting Nvidia marketing?
by noch 3y ago
With respect: Have you actually measured performance or are you merely quoting Nvidia marketing?
- wtallis 3y agoThere's not much measurement necessary for peak DRAM bandwidth; bit rate times bus width is pretty much the whole story when comparing GPUs of similar architecture and the same type of DRAM. That's not to say that DRAM bandwidth is the only relevant performance metric for GPUs (which is why a DRAM bandwidth regression doesn't guarantee worse overall performance), but there's really no need to further justify the arithmetic that says whether a higher bit rate compensates for a narrower bus width. If you were specifically referring to the performance impact of the big L2 cache increase: I don't know how big a difference that made, but it obviously wasn't zero.