Date: Sat, 28 Sep 1996 13:59:05 +0800 From: Peter Wemm <peter@spinner.dialix.com> To: Terry Lambert <terry@lambert.org> Cc: rmf@friley10.res.iastate.edu (Ric Flinn), freebsd-smp@FreeBSD.ORG Subject: Re: Adding a second CPU Message-ID: <199609280559.NAA17823@spinner.DIALix.COM> In-Reply-To: Your message of "Fri, 27 Sep 1996 20:39:25 MST." <199609280339.UAA00517@phaeton.artisoft.com>
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Terry Lambert wrote: > > I currently have an ASUS dual pentium motherboard with one pentium 90 cpu. > > I would like to add a second cpu; what requirements does the second cpu > > have to meet to be compatible with the first? > > WARNING: > > | Bill's problem, I think, is that he bought a dual-pentium motherboard... > | and it turns out that the machine will only accept two processors if > | they're both at the same stepping, and he can't run them at higher than > | 120MHz (I think it was). When he bought the system, however, he asked > | if he could just get a second processor, and they told him yes, even > | though he was buying it with a 133MHz processor... On this note, if you're using an ASUS PCI/E-P54NP4 neptune based board, there is no programmable clock generator, just a 60MHz crystal that can be replaced with a 66MHz crystal if you want to go from 90MHZ to 100Mhz, or 120 to 133, etc. It will drive dual pentiums at 133Mhz quite happily, provided you can get a 66Mhz crystal and have a recent-enough flash bios update. (I use 0311-6, which fixes all my "hang-on-reboot" problems and supposedly supports 120/133Mhz) Cheers, -Peter
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