cvs commit: src/sys/i386/cpufreq est.c

Kevin Oberman oberman at
Sat Feb 25 17:41:17 PST 2006

> Date: Sat, 25 Feb 2006 15:42:06 -0800
> From: Colin Percival <cperciva at>
> Kevin Oberman wrote:
> >> cperciva    2006-02-25 04:55:39 UTC
> >>   Log:
> >>   Add frequency-voltage tables for Intel 778, 758, 773, 753, and 733J
> >>   processors.
> >>   
> >>   Obtained from:  Intel Datasheet 302189-008
> > 
> > Is this a new datasheet or did someone find it in some odd corner of
> > Intel land? I'll admit that I'm baffled as to why Intel seemed to keep
> > this information under wraps for so long.
> Intel updates their datasheets from time to time -- the information for
> these processors was added in a new version of an old datasheet.  Intel
> still hasn't released the frequency/voltage tables for their 7x0 series
> processors or the formula used to compute them.

Ack! I was not paying nearly enough attention! Still no joy for my 760
CPU, then.

Thanks anyway. Hopefully some day it will be available. I still don't
understand why Intel would withhold this sort of information on an
out-of-date series of chips from those who would buy the chips! (Or, at
least system containing them.)
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at			Phone: +1 510 486-8634

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