Date: Sun, 08 Dec 1996 16:14:45 -0600 From: David Kelly <dkelly@nexgen.HiWAAY.net> To: Michael Beckmann <petzi@apfel.de> Cc: hardware@freebsd.org Subject: Re: Tyan Tomcat ? 256 MB RAM ? DIMMs ? Message-ID: <199612082214.QAA22742@nexgen.HiWAAY.net> In-Reply-To: Message from Michael Beckmann <petzi@apfel.de> of "Sun, 08 Dec 1996 14:17:25 %2B0100." <v03007802aed06fd9bcee@[195.52.251.6]>
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Michael Beckmann <petzi@apfel.de> writes: > > What do all you people do who want 256 MB RAM in their machines ? Do you > use 64 MB PS/2 SIMMs ? These are a bit hard to get, and more expensive than > the comparable number of 32 MB SIMMs. I also haven't found a source of 64 > MB EDO SIMMs at all, only FPM. IMHO, especially when you are dealing with 256M of RAM, buy FPM w/ parity. The possible performance boost of EDO isn't worth the loss of error checking. If you'll take a bit of a performance hit the Tomcat I will do error correction on its memory. Others have posted to the FreeBSD lists that it is very difficult to quantify a performance gain with EDO memory. Possibly EDO memory with parity would be the best of all worlds, and also the hardest to find. Think Micron might actually offer EDO w/parity. And while on the parity issue, make sure you buy "real parity" and not "logic parity" or "virtual parity." Some "genius" designed an asic to guess the 4 parity bits, and some vendors actually sell that junk. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.
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