Author: Aaron Gordon
Date: 05:51:34 06/18/04
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On June 18, 2004 at 06:39:17, Vincent Diepeveen wrote: >On June 17, 2004 at 21:39:26, Aaron Gordon wrote: > >You asked for example : > >Why filling all banks of a P4C/P4EE cas2 is helping a lot for DIEP you can read >at www.aceshardware.com, hardware reviews from the different processors and >comparing them against each other. > >The speedups reported by Johan thanks to SMT/HT only could get reproduced by >testers with all memory banks filled. If you fill 1 bank only, you don't get >like 21% speedup out of HT at all. > >See www.aceshardware.com Looks like he agrees with me: His quote: "No surprises here, as DIEP is more or less immune to faster memory subsystems." Link to page: http://www.aceshardware.com/read.jsp?id=65000313 If you notice in the benchmarks, DIEP speeds up 1kn/s (148 to 149) going to lower latency non-registered / non-ecc memory on the same CPU. Now double memory bandwidth, you'll notice no difference. Only difference I've seen is from decreasing memory/bus latency. Even then it is EXTREMELY small and one could say it is within margin of error.
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