Date: Tue, 2 Aug 2005 10:34:54 -0700 From: "David O'Brien" <obrien@freebsd.org> To: Ken Gunderson <kgunders@teamcool.net> Cc: freebsd-amd64@freebsd.org Subject: Re: TYAN Transport TA26 (B2882) BIOS V3.03 Message-ID: <20050802173454.GF71672@dragon.NUXI.org> In-Reply-To: <20050731113709.73cead31.kgunders@teamcool.net> References: <20050731113709.73cead31.kgunders@teamcool.net>
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On Sun, Jul 31, 2005 at 11:37:09AM -0600, Ken Gunderson wrote: > Just noticed this at Tyan's website dated 07/08/05: > TYAN Transport TA26 (B2882) BIOS V3.03: > New features and Fixes : .. > * Implemented AMD recommend for if 4 or more DDR400 DIMM's are used, > then the DDR speed is forced to DDR333 by default ... > Okay, it's the 4 or more DIMMS that caught my eye. Especially since on > a previous occassion they had specifically recommended Opteron 246 or > faster for use with DDR400. So now if I ugrade to the latest BIOS my > 4x1GB sticks of DDR400 will be forced to run at DDR333 speeds. > > <vent> > Fantastic!! Just what I always wanted. AMD ROCKS!! Market CPU's as > supporting DDR400 then force us to run at DDR333 when you realize you > screwed up! > </vent> I suspect these docs are overly terse and this applies to double-sided, double-stacked DIMM's, which put twice the load on the memory data bus and thus load the memory data bus beyond AMD's specification for pre-revision E Opteron CPU's. > And then there's the bank interleaving issue.... What is wrong with bank interleaving? -- -- David (obrien@FreeBSD.org)
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