Date: Tue, 15 Sep 2015 17:39:59 -0500 From: Jim Thompson <jim@netgate.com> To: Don Lewis <truckman@FreeBSD.org> Cc: dieterbsd@gmail.com, freebsd-hackers@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: ECC support Message-ID: <9E71A23E-2563-43FC-89F2-8ECB098EAD63@netgate.com> In-Reply-To: <201509152210.t8FMAPnv022327@gw.catspoiler.org> References: <201509152210.t8FMAPnv022327@gw.catspoiler.org>
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> On Sep 15, 2015, at 5:10 PM, Don Lewis <truckman@FreeBSD.org> wrote: >=20 > On 15 Sep, Dieter BSD wrote: >> Many of AMD's CPU/APU parts support ECC memory. Not just the top of = the >> line parts, but also many of the less expensive, less power hungry = parts. >> However, many (most?) of the boards for these chips do not support = ECC, >> or at least do not admit to it. They specify "non-ECC memory". >>=20 >> Obviously there have to be connections between the memory controller = and >> the memory for the extra bits. Aside from a little extra time for = the >> board designer to add a few traces to the wire list, this would not >> raise the cost of the board. Despite this I have read that some = boards >> lack the necessary traces. >=20 > I don't think the current APU parts support ECC. My guess is that the > current APU sockets don't have the connections to support it. The G-Series (such as the T40E used on the APU) doesn=E2=80=99t support = ECC. =E2=80=9CKabini=E2=80=9D (=E2=80=9CG-Series 2.0=E2=80=9D aka GX-210 / = GX-415/420) supports a single channel of ECC ram. Honestly, at the densities used by some of these boards, ECC doesn=E2=80=99= t make much sense. (Obviously, if you=E2=80=99re running storage appliance, this position = is reversed.)
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