Date: Thu, 9 May 1996 00:13:49 GMT From: James Raynard <fqueries@jraynard.demon.co.uk> To: JSINNOTT@pomona.edu Cc: questions@freebsd.org Subject: Re: Upgrading RAM for my FreeBSD box - so many choices! - help please Message-ID: <199605090013.AAA05856@jraynard.demon.co.uk> In-Reply-To: <01I4FKYPUOTU8X2QDY@POMONA.EDU> (message from JOHN on Tue, 07 May 1996 17:38:19 -0800 (PST))
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>>>>> JOHN <JSINNOTT@POMONA.EDU> writes: > > Is it really necessary to get EDO? I have heard that EDO is really just a > gimmick, and that any performance gain is small - but the price difference is > huge. Yes, apparently the performance gain is only a few percent. I suppose it depends how badly you want the gain 8-) > Also, parity or non-parity? I've always gone for parity myself, being a fairly cautious person, but I've heard arguments that that's a waste of money as well. > And is 70ns acceptable speed, or is 60ns standard now? Make sure it's the same as the other memory you already have. If it's not the right speed, all sorts of strange things could happen (either running very slowly or crashing mysteriously). > Finally, I understand that I need to recompile the kernel so that it may access > over 32 MB of Ram, is this correct? Nope, that's only if you go over 64MB. In case you need it, the magic formula is to add a MAXMEM option with the amount of RAM in kilobytes to the kernel config file, eg if you had 128MB (== 131072kB) options "MAXMEM=131072"
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