Date: Sat, 13 Sep 1997 23:03:02 +0400 (MSD) From: marck@gw.rinet.ru (Dmitry Morozovsky) To: hlew@www2.shoppersnet.com (Howard Lew) Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: Cyrix/IBM 200+ memory speed Message-ID: <199709131903.XAA09441@gw.rinet.ru> In-Reply-To: <Pine.BSF.3.91.970913102009.13135B-100000@www2.shoppersnet.com> from "Howard Lew" at Sep 13, 97 10:36:04 am
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Hi there, > > here is memory speed determined via dd </dev/zero >/dev/null > > (CPU still recognized as 486) > > > > Results are very similar with clocks 60x2.5 and 75x2 (BTW, my ASUS T2P4 need > > to be set up as 60x3 (!) to be 60x2.5 indeed) > > > > Block size 4k 16k 128k 512k 1m 2m > > dd mem speed 135 113 140 113 50 44 > > Hmmm... Shouldn't 75x2 give much better memory speed than with a 60MHz bus? > Cyrix 6x86MX-PR166 (66x2), PC Chips M560 ALI Alladin IV+ ~~~~~ > Block size 4k 16k 32k 64k 128k 512k 1m 2m > dd mem speed 180 323 282 220 135 117 76 73 > > Average values are a little higher if shut down X and use a vty (i.e. 1m > is 82) Howard, look twice at underlined statement. My CPU is 8x86/L-PR200+ (not MMX) However, results are *independent* of bus speed -- and that's strange for me too. If I use 60x3 (not x2.5! -- then BIOS reported CPU as 150+) results are the same (differences may be kept inside 1-2%) as for 75x2. Misterious. Sincerely, D.Marck ======================================================================== === D.Marck --- Dmitry Morozovsky --- marck@rinet.ru --- Wild Woozle === ========================================================================
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