From owner-freebsd-hardware  Sat Sep 13 10:36:28 1997
Return-Path: <owner-freebsd-hardware>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id KAA15298
          for hardware-outgoing; Sat, 13 Sep 1997 10:36:28 -0700 (PDT)
Received: from www2.shoppersnet.com (shoppersnet.com [204.156.152.112])
          by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id KAA15293
          for <freebsd-hardware@FreeBSD.ORG>; Sat, 13 Sep 1997 10:36:25 -0700 (PDT)
Received: (from hlew@localhost)
	by www2.shoppersnet.com (8.8.5/8.8.5) id KAA14021;
	Sat, 13 Sep 1997 10:36:04 -0700 (PDT)
Date: Sat, 13 Sep 1997 10:36:04 -0700 (PDT)
From: Howard Lew <hlew@www2.shoppersnet.com>
To: Dmitry Morozovsky <marck@gw.rinet.ru>
cc: freebsd-hardware@FreeBSD.ORG
Subject: Re: Cyrix/IBM 200+ memory speed
In-Reply-To: <199709121813.WAA28568@gw.rinet.ru>
Message-ID: <Pine.BSF.3.91.970913102009.13135B-100000@www2.shoppersnet.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-hardware@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

On Fri, 12 Sep 1997, Dmitry Morozovsky wrote:

> Hi there,
> 
> according to previous discussion
> 
> 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)