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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!news.unimelb.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!arclight.uoregon.edu!super.zippo.com!zdc!szdc!szdc-e!news From: "John S. Dyson" <dyson@freebsd.org> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Pentium Pro and FreeBSD Date: Sun, 29 Dec 1996 21:15:08 -0500 Organization: John S. Dyson's home machine Lines: 39 Message-ID: <32C725AC.41C67EA6@freebsd.org> References: <32C063E4.69BE@ibm.net> <32C0DF02.41C67EA6@freebsd.org> <tporczyk.851889405@shellx> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (X11; I; FreeBSD 3.0-CURRENT i386) Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:33262 Tony Porczyk wrote: > > "John S. Dyson" <dyson@freebsd.org> writes: > > >It appears to be generally approx 2X a P5-166. I have been > >working on P6 specific improvements also to gain even more. > > I noticed a great difference in price between PP200 and PP180 that > doesn't seem to be justified just by the 10% higher clock speed (almost > twice the price). Is there something about PP200 that goes beyond the > clock speed improvement? I am about to order the new system > (components) within the next two days (thanks IRS for forcing stupid > schedules), and I'm grappling with this question right now. > I am a bit of a crazy person, and play with running my PPro-180 at speeds between 180 and 233 with success and no failures. It is NOT a good practice to run a 180 at 233, but works for some people. (Of course, make sure that your processor has a good fan, and I have heard through the grapevine that the 512K cache is a bit more of a problem at high speeds than the 256K cache.) I would NOT entertain running an overrated processor in a production system, but for a single user desktop that isn't mission critical, it isn't that bad an idea. Note that I really don't see that much of a speed difference running at 180 vs. 200, and at both speeds, my processor runs as expected, with the performance associated with the running clock rate. Both the L-word and FreeBSD are making improvements to the kernels to support the advanced features of the PPro and P5. FWIW, I do prefer the PPro in general, and would even entertain getting a PPro-150 if my budget was tight (instead of a top-end P5.) I would like to look at some of the latest generation Cyrix/AMD parts also -- people sometimes put them down, but I certainly could not design one of those thingies :-). John