Jake wrote:
> as far as i am aware it is true
> the CPU temp i have seen on P4 and AMD systems differ greatly P4 ~
30-40 AMD
> ~50-70 C

That's what I've seen too.  Maybe someone could convince Keith W in
a.e.e that that is the case.  He doesn't think so.

> P4's TPS (heh heh) Thermal overload system is currently the best there
is
> if you have a P4 running Quake 3 then yank the heatsink off the CPU
actually
> underclocks itself practically instantly till it maintains a stable
temp
> (frame rate drops from 180 to 4)
> AMD lets the smoke out in the same circumastance
>
> Toms hardware has a set of demo's of this and you can see the AMD
chips
> almost catch fire

Those AMD's were impressive in that video, weren't they.  ;-)  That's
why I refuse to sell them to anyone.

> Celeries and the like just warm up a little then freeze up no cooking.
> overall intel is much better from a thermal stand point. AMD (last i
> checked) dont have thermal diodes on the CPU them selves and rely on
the
> motherboad manufacturees to put a diode on the MBO under the CPU then
use
> the bios to shutdown in the event of thermal overload.

It doesn't seem to work on the AMD.

michael brown

> ----- Original Message -----
> From: "Russell McMahon" <apptech@PARADISE.NET.NZ>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Saturday, February 15, 2003 4:19 PM
> Subject: [EE]: Erroneous PC cpu operating temperature claims
>
>
> > In private correspondence, re claims about AMD versus Intel PC CPU
> operating
> > temperatures,  Rod wrote
> >
> > > Have trouble believing there is much difference between I and AMD
...
> >
> > It's garbage.
> >
> > (Someone had written)
> > >> ... , but did you know that with the fan/heatsink off an AMD
> > >> Palomino runs at 5680F and an AMD Athlon 1400 it run at 6980F! If
the
> fan
> > >> fails that leaves only the heatsink to dissipate all that heat.
> >
> > >> In comparison, the Intel Pentium 4 2Ghz runs at 840F and the
Intel
> > Pentium
> > >> III 1Ghz runs at 1000F with the fan/heatsink off.
> >
> > ALL modern processors draw extremely high currents at low voltage.
> > Haven't looked up requirements but probably 20A plus plus at 1.5 to
3
> volts.
> >
> > Even 20 watts (below any of above) on an unheatsunk chip will fry it
vvv
> > quickly.
> >
> > It may be that Intel's cpu's have a little more thermal mass than
AMDs
> which
> > may allow them to survive for a few more seconds totally unheatsunk.
(But
> an
> > eg  Celeron 1700 looks pretty minimal in any sort of mass to me).
> >
> > Just possibly Intel's heatsinks are superior and without a fan they
run
> > cooler.
> > But even then the temperatures they claim are bunk.
> > 84 F = 27C
> > The heatsink on the Celeron 1700 I installed a few days ago runs
> annoyingly
> > hot with VERY large Intel heatsink and fan. I'd say around 50C !
> >
> > Anyone here have any REAL figures?
> >
> >
> >
> >         Russell McMahon
> >
> > --
> > http://www.piclist.com hint: To leave the PICList
> > mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
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