Author: Vincent Diepeveen
Date: 03:34:18 06/19/04
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On June 18, 2004 at 14:02:22, Yen Art Tham wrote: >On June 18, 2004 at 08:51:34, Aaron Gordon wrote: > >>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. > > >In other words, there is no significant difference in the performance of a chess >program when using either generic memory or expensive memory like Corsair. >Correct? Wrong. Using cas2 400Mhz memory is way faster than 200Mhz cas3. *real huge* difference.
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