Date: Wed, 18 Dec 2002 23:24:06 -0700 From: "Mike" <massey@rmci.net> To: <freebsd-questions@FreeBSD.ORG> Subject: RE: testing memory speed Message-ID: <001c01c2a727$3be0da30$2202ded8@data> In-Reply-To: <20021209211010.L4166-100000@lethargic.dyndns.org>
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Some BIOS detect memory speed and size. Mine showed a mismatch in speed 100 on one and 133 on another. Changed to both 133 and did not really see a difference. -----Original Message----- From: owner-freebsd-questions@FreeBSD.ORG [mailto:owner-freebsd-questions@FreeBSD.ORG] On Behalf Of Jason Hunt Sent: Monday, December 09, 2002 10:08 PM To: David S. Jackson Cc: freebsd-questions@FreeBSD.ORG Subject: Re: testing memory speed On Mon, 9 Dec 2002, David S. Jackson wrote: > Is there a utility to test memory speed? I looked at memtest in > ports, but it looks like that mainly tests for faulty memory. I did a > websearch and found a command: dd </dev/zero >/dev/null, but that > doesn't seem to summarize the memory speed easily for me. > > Can anyone else give me a pointer to how to test my machine's memory > speed? How can I find out whether a memory stick is compatable with > an old box? > The speed of the memory is a hardware issue. If you mismatch the speeds of your memory and your motherboard, then the board will either try and force the memory to run a the speed it wants, or the motherboard will drop it's bus speed down to match that of the memory. Either way, I don't think that software is able to tell you if a stick of memory should be running at the speed it is, because the software can only read what the motherboard is running at. My suggestion would be to just try the memory. If it doesn't work, you won't break anything. The worst case scenario is that the motherboard detects the wrong size of memory if the speed is mismatched, which should still be usable anyways. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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