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Re: Ppro 180 or p200 or dual p166??

daemon@ATHENA.MIT.EDU (Ben Scott)
Thu May 1 08:24:31 1997

Date: 	Thu, 1 May 1997 08:22:38 -0400 (EDT)
From: Ben Scott <bscott@leonardo.sr.unh.edu>
To: robert johannes <rjohanne@piper.hamline.edu>
cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <33681B4F.2246@piper.hamline.edu>

On Wed, 30 Apr 1997, robert johannes wrote:
> so most of the freezing and fatal error messages must be caused by the
> ide system as you predicted.  

  I would hesitate to say "must", but the chance is there and I've seen it
happen.  In general, SCSI just deals with the whole thing better, so it often
fixes problems.  If you're not upgrading right away, you might try recording
with just SCSI devices (disable IDE, if you can) in use, to see if it makes a
difference.

  Those BusLogic cards seem to work very well with Linux, and the Quantum
drives are pretty good, too, so I think that will help.  I've had mixed
results with the one Philips CD writer I've used, but it's also the only CD
writer I myself have used, so I hesitate to offer advice on that.  :)

> Regarding the dual pentium cpus, wouldn't having dual cpus be equivalent to
> having a pentium pro or better because twice as many programs are execute
> within a given time interval?

  Well, the Pentium Pro has a faster clock and so does more in a given
realtime interval.  Of course, two P5/166s means 332 cycles/second, way more
then the single PPro.  So, yah, that would make a big difference.  Enough to
beat the single P6, I would bet.  It is worth pointing out, though, that the
PPro: Handles the 32-bit instructions Linux uses better; gets more done per
clock cycle due to deeper pipelines, multiple instruction decoders, and things
like that; and also has that huge on-chip cache.

  Best of luck with your upgrade, whatever you pick. :)

----
Ben Scott <bscott@leonardo.sr.unh.edu>
Technical support staff
Space Science Center
University of New Hampshire


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