Date: Wed, 16 Aug 1995 18:51:29 +0300 (EET DST) From: "Andrew V. Stesin" <stesin@elvisti.kiev.ua> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: hardware@freebsd.org Subject: Re: NCR or Adaptec? Message-ID: <199508161551.SAA07694@office.elvisti.kiev.ua> In-Reply-To: <199508160807.RAA28115@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Aug 16, 95 05:37:24 pm
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Dear Mike, # I'm in the process of speccing up my new PCI wonderbox, and I'm # looking for commentary on the relative merits of NCR 53C810 vs. Adaptec # 2940 when it comes to PCI SCSI controllers. # # The particular NCR card I'm being quoted on is the ASUS PCI SC200. # [...] # Any comments? If the Adaptec is worth the extra $300 or so, I'll bite. # of course, YMMV, but: a while ago I tested PCI Adaptec with 7870 chip on it against the NCR 53c810-based single-chip controller (SP-810) on _the same_ hardware, this means that the box, the motherboard, the 2 1Gb IBM disk drives and the CDROM were the same, the P90 CPU and 32M of RAM were the same, just only HBA changed, and FreeBSD-2.0.5 was the same installation, even the directory where iozone ran was the same. iozone 128 8192 gave: 3.2/3.4 Mb/sec for Adaptec; 4.0/4.1 Mb/sec for NCR. So both are good, and congratulations to the authors of both drivers; BUT: maybe I'm crazy, but $70 NCR won vs. $350 Adaptec with 20% speedup! I think that both the driver is great, and the overhead on a simple single-chip NCR is significantly lower than on Adaptec, especially considering it's 2-lawyer software/firmware design. Or am I missing smth? -- With best wishes -- Andrew Stesin, Elvisti.Kiev.UA sysadmin.
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