Author: Djordje Vidanovic
Date: 08:42:41 08/15/05
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On August 15, 2005 at 11:34:28, Robert Hyatt wrote: >On August 15, 2005 at 11:27:53, Djordje Vidanovic wrote: > >>You can safely assume that the following rule is valid: >> >>P4 x .6 = AMD64 Ghz >> >>examples: P4 @ 3 Ghz = AMD64 @ 1.8 Ghz, or P4 @ 2.4 Ghz = AMD64 @ 1.44 Ghz >> >>Regarding the 2.4 Ghz AMD64 that you plan to buy, it would turn out that only a >>(non-existant as yet) P4 running at 4 Ghz would meet the equation. >> >>Simply put, an AMD64 2.4 Ghz is as fast for chess as a P4 @ 4Ghz, and quite >>often it is as fast as a dual Xeon 2.4 (most notably running Shredder 9). >> >>All this holds true for 32 bit systems, but a 64 bit OS would lead to Hyatt's >>idea that a single AMD64 would be almost twice as fast as a 2.8 dual Xeon. >> >> >>I hope that this detailed information will help you to decide which way to go. >> >>Djordje > >Your comparison is slightly broken. AMD = 64 bits, PIV is not. In the case of >Crafty, this changes things so that a 2.2ghz opteron is over 2.1x faster than a >2.8ghz PIV xeon (with 1mb L2 to boot on the intel)). Me no understand :-(( I just said that *quote* ...[your idea is] that a single AMD64 would be almost twice as fast a 2.8 dual Xeon [on a 64 bit OS]. So, what is it exactly that you want to say? I said 'almost twice' and you quoted 2.1x faster... I may be missing something though. Djordje
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