From owner-freebsd-hardware Tue Dec 5 21:12:11 2000 From owner-freebsd-hardware@FreeBSD.ORG Tue Dec 5 21:12:09 2000 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from portnoy.lbl.gov (portnoy.lbl.gov [131.243.2.11]) by hub.freebsd.org (Postfix) with ESMTP id C41C137B400; Tue, 5 Dec 2000 21:12:09 -0800 (PST) Received: (from jin@localhost) by portnoy.lbl.gov (8.11.1/8.11.1) id eB65C9m24117; Tue, 5 Dec 2000 21:12:09 -0800 (PST) Date: Tue, 5 Dec 2000 21:12:09 -0800 (PST) From: Jin Guojun (DSD staff) Message-Id: <200012060512.eB65C9m24117@portnoy.lbl.gov> To: msmith@freebsd.org Subject: Re: high bandwidth I/O motherboard (any recommendation?) Cc: hardware@freebsd.org Sender: jin@portnoy.lbl.gov Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org } > Intel 810/815e + 82801AA/82801BA } > VIA VT82C694X + VT82C686A/VT82C686B } > } > Any comments/suggestion on which motherboard can give 120MBps I/O bandwidth? } } You will get best results with the Intel 440BX, especially overclocked } and with faster SDRAM (the real issue is memory bandwidth). The memory bandwidth is the problem. But the BX only supports PC-100. Drop PC-133 into the system will not help much, except that the overclocking will not worry about memory bomb. The really problem for the current PCI chipset is that its memory controller cannot give us full memory bandwidth. If we can have full memory bandwidth that matches memory chip, then we can get full PCI I/O bandwidth. } If I recall, you're also very much concerned with cost; otherwise I'd be } recommending the ServerWorks chipsets. Yup, I have ServerWorks chipsets and know what they can do; but the cost drag me away from it. VIA is building PRO-266 chip that will support 266MHz FBS. VIA claims that this chip bits RIMM, and also claims it will support Intel SMP and AMD 760 MP. Schduled for January, 2001. -Jin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message