Date: Wed, 24 Mar 2010 20:48:48 -0500 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: John Long <fbsd2@sstec.com> Cc: freebsd-stable@freebsd.org, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: Powerd and est / eist functionality Message-ID: <20100325014848.GW62031@over-yonder.net> In-Reply-To: <5.2.1.1.2.20100324165115.03159ab8@mail.sstec.com> References: <5.2.1.1.2.20100324100236.0320fec8@mail.sstec.com> <5.2.1.1.2.20100322150534.032bee30@mail.sstec.com> <5.2.1.1.2.20100322150534.032bee30@mail.sstec.com> <5.2.1.1.2.20100324100236.0320fec8@mail.sstec.com> <5.2.1.1.2.20100324165115.03159ab8@mail.sstec.com>
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On Wed, Mar 24, 2010 at 06:04:51PM -0700 I heard the voice of John Long, and lo! it spake thus: > >> The i3/i5/i7 chips don't appear to offer ECC framework on their >> memory controllers (which are now on-die as I'm sure you know), >> which is why I plan to stay away from them for servers. > > I agree with your thoughts however I believe one can still use the > I-series in a p55 board and get the ECC working Not the case. To use ECC, the memory controller has to support it. Nehalem moved the memory controller on-die, and on the non-Xeons, it doesn't have ECC capability. You'd have to go Xeon, use prior chips (with the memory controller on the motherboard) with careful motherboard selection, or use AMD (where all the chips have ECC in the IMC, though you still need a little care to be sure your motherboard doesn't sabotage it). -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.
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