P III coppermine on 100+ fsb?

  • Thread starter Thread starter Dave Gee
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Dave Gee

Hi all:


I just put 2 1Ghz coppermines in my HP Kayak 800 and am left with the

old 800 mhz coppermine processor 133/256/1.65v that I took out.
I have an old PII 450 slot 1 machine that has a SP P2bxa MB. This
machine is running a 112 (overclocked) fsb and the VRM on these boards
is supposed to be capable of 1.3 to 2.2v.
My question is what is likely to happen if I plug the 800 coppermine
into this machine?
It appears it will fit the slot but will the 800 run (at around 675)
or refuse to function at all?
Has anyone done something like this or care to hazard a guess about
potential damages that might ensue?


P.S. The MB has a bios that is supposed to recognize a PIII although it

is only documented for older 533 100/512/2.0v types.


TIA
Dave G.
 
it will work or it won't don't think you will hurt anything by trying
if the voltage regulator gives it the proper voltage it should work
the 450 is a 100fsb depending on the fsb of the 800 that could cause
it to slow down.
 
Thanks for the reply Jim:

The fsb of the 800 is 133, that should give me around 675 on the 800
at the overclocked 112 I am running.
Since the machine is going out to the shop and will only be used for
RS-232 chores with some text editing it would be ok to just leave it
alone but the idea of running at 450 when I have this working PIII 800
laying around is just more than I can stand.
BTW the slot 1 from the old Kayak has plastic things that hold on the
heat sink that look like they will have to be destroyed to remove it! I
suppose that I could leave it as passive since it will be underclocked
and should run fairly cool.
I will do it on wednesday and report of what happens.

Dave G.
 
BigJim wrote:

"you will need a heatsink and fan on any of the old p3s they run fairly
warm"

Well I got around to swaping out the processors this afternoon, and you
are right it runs pretty hot, after about 15 min. the heatsink is
pretty hot to the touch, I would think around 125-135 f. I will look
into cooling options tomorrow. The "super power" or San LI or whatever
P2BXA MB supplies the 1.65v dead on, so anyone with one of these old
obscure MBs should be able to do this also as the VRMs work pretty
well, I did'nt have to touch anything in the way of jumpers or bios
settings.
Other than that everything works fine, the machine is much faster,
sandra reports a processor speed of 668 and the speed index went from
about 500 to 817!
Turning shaded renderings in my CAD program is now pretty
seamless,(using an old Elsa Gloria AGP video) where before they tended
to "jump" a bit.
At least on some MBs, this is a cheap and easy way to upgrade
performance of old slot 1 PII machines.
Of course, your milage may vary.
Again, thanks for the good advice.
 
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