Author: fca
Date: 05:45:55 08/11/98
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On August 11, 1998 at 08:06:36, Tom Kerrigan wrote: >Aside from software differences, the Pentium MMX/200 has a 66MHz L2 cache >(possibly smaller than 512k) whereas the Pentium II/300 has a 512k 150MHz L2 >cache. Are you sure, Tom? I thought the 1/2 speed clock for the L2 only applied to P2's of 350MHz or faster (excepting Xeons, which are of course full speed L2-ers). If so, 100 MHz >> 66 MHz >If a program really bangs on the L2 cache, it will go much faster on the >Pentium II. Surely. Let us test that this is the cause for the differences blass reports. (a) Does it follow in broad terms that the higher the nps, the more hash activity (but what about other tables?), therefore more L2-dependence (L1 deemed to be too small to have too much influence)? (b) Is the P2/300 : P200MMX ratio even higher for F5 (which I take it is accepted is significantly higher in nps terms than J?) If answer for (a) is Yes and answer for (b) is No, the cause is liable to be something else. >Cheers, >Tom > >On August 10, 1998 at 22:23:46, fca wrote: > >>I am puzzled, Uri. >>http://www.rebel.nl/bench.htm shows the P2/300 about 50% - 60% faster than the >>P200MMX for Rebel. >>Intel benchmark pages ( SPECint (base)95 ) give +80%. >>While obviously different programs benefit by different amounts by CPU upgrades, >>your figures show +150% which is a huge difference! >>Any ideas? Kind regards fca
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