From owner-freebsd-hackers@freebsd.org Tue Aug 28 00:44:08 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 01524109ABBF for ; Tue, 28 Aug 2018 00:44:08 +0000 (UTC) (envelope-from truckman@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "smtp.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A58F38AC02; Tue, 28 Aug 2018 00:44:07 +0000 (UTC) (envelope-from truckman@FreeBSD.org) Received: from mousie.catspoiler.org (unknown [76.212.85.177]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: truckman) by smtp.freebsd.org (Postfix) with ESMTPSA id E05F5266EF; Tue, 28 Aug 2018 00:44:06 +0000 (UTC) (envelope-from truckman@FreeBSD.org) Date: Mon, 27 Aug 2018 17:44:04 -0700 (PDT) From: Don Lewis Subject: Re: Ryzen Build Problem To: Stefan Blachmann cc: Meowthink , freebsd-hackers@freebsd.org, Mitchell In-Reply-To: Message-ID: References: <32e008cf-93d3-944d-9b11-e56f1bb425ef@wyatt672earp.force9.co.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; CHARSET=us-ascii Content-Disposition: INLINE X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Aug 2018 00:44:08 -0000 On 27 Aug, Stefan Blachmann wrote: > It is remarkable that AMD's list only contains "brands" like Crucial > and the like, but not a single first-party-manufacturer. > Why? Because the first-party-manufacturers do not sell bad memories, > for simple reputation reasons. > > The question where all these masses of B-grade selection chips remain, > which the memory manufacturers reject for use under their own brand, > is an old taboo in the industry. > > My personal impression is that these are dumped via these third party > memory module manufacturers. > The typical gamer/overclocker customer unaware of this will readily > explain away problems on her non-ECC systems equipped with memory > chips rejected by the original manufacturer as "the usual Windows > crashes". > The consumers will even happily take the fancy "coolers" on the > modules as "sign of quality and worthiness", whose actual function is > to hide the crap inside. > > Thus my personal advice: > Do not use memory modules from third-party-manufacturers. > The time and data you lose does not justify the savings when buying > stuff from B-grade-stuff remarketers. > Only buy first-party-memory modules, i.e. Samsung, Hynix, Micron etc. > (If you really insist on using third-party-modules, take Kingston, who > have a comparatively small history of using unreliable chips compared > to other "brands".) Crucial == Micron. There is a Micron copyright notice at the bottom of the Crucial home page, and a link to Crucial at the bottom of the Micron home page. When I put together my Ryzen machine last year, I purchased the Crucial DDR4-2400 ECC RAM that was listed on the motherboard vendor's qualified list. I also looked up the part number for the Micron-branded equivalent, but didn't find any available for retail sale. I've used a fair amount of Kingston RAM in the past, but at the time they didn't have DDR4 ECC RAM in that speed grade.