From owner-freebsd-hardware Tue Feb 4 04:06:18 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id EAA12661 for hardware-outgoing; Tue, 4 Feb 1997 04:06:18 -0800 (PST) Received: from dfw-ix3.ix.netcom.com (dfw-ix3.ix.netcom.com [206.214.98.3]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id EAA12656 for ; Tue, 4 Feb 1997 04:06:15 -0800 (PST) Received: from silvia.HIP.Berkeley.EDU (wck-ca4-22.ix.netcom.com [199.35.213.150]) by dfw-ix3.ix.netcom.com (8.6.13/8.6.12) with ESMTP id EAA20525; Tue, 4 Feb 1997 04:05:34 -0800 Received: (from asami@localhost) by silvia.HIP.Berkeley.EDU (8.8.5/8.6.9) id EAA02579; Tue, 4 Feb 1997 04:05:22 -0800 (PST) Date: Tue, 4 Feb 1997 04:05:22 -0800 (PST) Message-Id: <199702041205.EAA02579@silvia.HIP.Berkeley.EDU> To: roberto@keltia.freenix.fr CC: freebsd-hardware@freebsd.org In-reply-to: <19970202161858.XX27267@keltia.freenix.fr> (roberto@keltia.freenix.fr) Subject: Re: 64 MB ECC or 128 MB non ECC ? From: asami@vader.cs.berkeley.edu (Satoshi Asami) Sender: owner-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk * From: roberto@keltia.freenix.fr (Ollivier Robert) * One thing to consider is that you'll suffer a 10-15% speed penalty with ECC * RAM. (number from some -hardware mails in the past). To clarify: 10-15% penalty on maximum memory bandwidth. (E.g., 70MB/s vs. 64MB/s on TritonII with 66MHz bus and P5-133.) This is NOT the same as application speed penalty, which obviously varies depending on how memory-intensive it is. Satoshi