ARTICLE: Memory bandwidth

From: James Rogers (
Date: Fri Apr 13 2001 - 16:05:01 MDT

By fortuitous coincidence, this article was just posted on Slashdot.

Among other things, it basically says that Intel's architecture has hit the
memory wall. Huge increases in clock speed appear to be having no
substantial effect on computational performance (e.g. <5%); all relative
improvements between the P3 and P4 scale almost exactly with the
differences in effective memory bandwidth between the chips, particularly
for computational problems that are much larger than the cache
size. Plenty of benchmarks and comparative data between the P3 and P4 for
those interested and another data point regarding the seriousness of this
particular problem.


-James Rogers

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