Date: Mon, 21 Feb 2000 00:34:55 +0100 From: Olaf Hoyer <ohoyer@fbwi.fh-wilhelmshaven.de> To: Andreas Klemm <andreas@klemm.gtn.com> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: separate udma66 controller possible, when only having udma33 bios Message-ID: <4.1.20000221002928.009bb930@mail.rz.fh-wilhelmshaven.de> In-Reply-To: <20000220213711.A62313@titan.klemm.gtn.com> References: <4.1.20000220202241.009539a0@mail.rz.fh-wilhelmshaven.de> <20000220190651.A27410@titan.klemm.gtn.com> <4.1.20000220202241.009539a0@mail.rz.fh-wilhelmshaven.de>
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>> But to run UDMA/66, you also need the special 80-wire cabling, > >Well, then I'll have to buy an 80-wire cable tomorrow as well. Hi! Well, only needed when using a separate controller like the Promise. If you decide to take the on-board controller than you could use every "el cheapo" 40-pin cable... > >> but unless you are not having some more of that beasts in your >> machine, there will be no big difference to UDMA/33. > >The Maxtor 54098U8 will be the only EIDE device in the machine. >So would it be satisfactory, to run it with the on board EIDE >controller ??? But you also told me, that the CPU utilization >is less with UDMA/66. So ... if I want to save some CPU cycles, >should I nevertheless use UDMA/66 ?! Well, if you use it as single drive, even the difference in CPU cycles won't probably make up significantly in user-visible manner. Yes, for benchmarks, it would show a slightly faster operation, but in real life, there should be no real improvement. Regards Olaf Hoyer -------- Olaf Hoyer www.nightfire.de mailto:Olaf.Hoyer@nightfire.de FreeBSD- Turning PC's into workstations ICQ:22838075 Liebe und Hass sind nicht blind, aber geblendet vom Feuer, dass sie selber mit sich tragen. (Nietzsche) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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