Author: Robert Hyatt
Date: 12:16:57 07/10/98
Go up one level in this thread
On July 10, 1998 at 13:39:42, Mark Young wrote: >On July 10, 1998 at 06:53:00, Ed Schröder wrote: > >>>Posted by Kim Hvarre on July 10, 1998 at 05:46:37: >> >>>In Reply to: Re: Cool AMD 450 Mhz.... posted by Robert Hyatt on July 10, >>>1998 at 00:35:52: >> >>>On July 10, 1998 at 00:35:52, Robert Hyatt wrote: >> >>>snipsnip >> >>>>Somehow our benchmarks are different. First, I don't see how the Xeon is better >>>>at context-switching than a normal PII.. that is independent of cache >>>>completely. however, I have benched my P6/200 vs PII/300's and get 1.41 every >>>>time I try, using crafty. The first benchmark data I got on a Xeon (source I >>>>can't reveal) was exactly 2.25X faster than what I am getting on my P6/200. >>>>This makes sense as crafty has no MMX code whatsoever, so that both processors >>>>are using the same core technology and relative cache speeds. But note that I >>>>am a real 32-bit application here with no known-to-be-bad stuff tucked away to >>>>hurt performance. >> >>>>For comparison, the AMD K6 seems a perfect match for the P6/200 when the clocks >>>>are matched... But the Xeon is clocked faster.. >> >>>Qouting from Ed's benchmarkpage: >> >>>Pentium PRO 200 1:02 7:38 1:57 0:19 4:56 0:26 >>>Cyrix 200 1:22 10:12 2:20 0:17 3:45 0:22 >>>AMD K6 200 0:47 5:50 1:30 0:15 3:45 0:20 >> >>>one must (?) conclude, that the Rebelcode has "known-to-be-bad stuffed tucked >>>away" or? >> >>I do not think the better performance of Rebel on AMD in comparison with >>Intel chips is related to the code. Rebel since version 6 is a normal >>32-bit application. >> >>From postings from other programmers I noticed that AMD also runs their >>programs faster than Intel. >> > >Im not sure why AMD runs some programs faster. Most programs run faster on the P >II chip. But most chess programs run faster on AMD, but not all. I have asked >many time why this is so. One programmer told me it was due to the code and how >it was compiled. I think Bob has said his program runs best on the intel chip. > actually, in my case, I can't tell 'em apart, if the clocks are the same. IE the first AMD K6/233 I tried was about 15% faster than a pentium pro 200, which is about what you'd expect comparing only clock frequency. >>At the moment AMD by far is simply the best processor around. >> >>But the Intel (slot-2) is coming, will it out-perform AMD? >> >>Maybe, but certainly not in price. The last I read the chip will cost $4500. >> >>I pity Intel :) >> >>- Ed - >> >> >>>As You know these figures are average from several users. Perhaps the diff. >>>comes from the L1 cache - I don't remember where PP differ from K6 in that >>>respect. >> >>>kim
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