Processor should be at 200mhz but only shows 166mhz

  • Thread starter Thread starter InsomniaKev
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I

InsomniaKev

Got an old computer here with a PCCHIPS M507 mb in it. 430fx chipset.

Stuck in a 200mmx in it and set the jumpers to 66 x 3. But it is only
showing 166 on bootup and 166 as well in windows's dxdiag/system
information programs.

everything i've read says it supports a 200mhz.

Any guesses?
 
InsomniaKev said:
Got an old computer here with a PCCHIPS M507 mb in it. 430fx chipset.

Stuck in a 200mmx in it and set the jumpers to 66 x 3. But it is only
showing 166 on bootup and 166 as well in windows's dxdiag/system
information programs.

everything i've read says it supports a 200mhz.

Any guesses?
Click to expand...

You probably don't have the PCI bus jumper set to the proper
level...have to get both jumpers set right on those older boards to get
the proper CPU speed...

Ari

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Got an old computer here with a PCCHIPS M507 mb in it. 430fx chipset.

Stuck in a 200mmx in it and set the jumpers to 66 x 3. But it is only
showing 166 on bootup and 166 as well in windows's dxdiag/system
information programs.

everything i've read says it supports a 200mhz.

Any guesses?
Click to expand...


Hi!

Do you have the latest BIOS (well, that would already by ages old too
:O))? AFAIK, the M507's older BIOS had some limitation, as far as CPU
support went (but this could've been 133Mhz..., so, might not apply).
Do you have the settings like this:
JP11 SHORT
JP12 OPEN
JP13 OPEN
JP14 SHORT


Cheers

Sascha

P.S.: Does the board have the VRM (Voltage Regulation Module)? I thought
it only supported single voltage CPUs, and the P55Cs (the MMXs) are
dual voltage, IMHO.
 
On 19.08.2003 03:51, InsomniaKev wrote:
Hi Kev!

yep, probably won't bother to update the bios.
Click to expand...


OK, after thinking about it a bit at work (slow day at university, its
summer break :O)), I remebered something about the way the multipliers
with the P55C worked, so I checked it out, and it turned out that my
sieve-like memory for once did not betray me.
AFAIR, there was a change in the pin assignment from the P54C to the
P55C, that resulted in the fact that some boards would not accept
multipliers for it higher than 2.5, unless they were modded (which
involves some soldering of a resistor in between two solderpoints on the
back-side of the mobo... in other words, I wouldn't bother... and given
my talents with the soldering iron, that would be a good idea :)).
Given that the M507 is not really all that great of a mobo, I guess that
is probably the problem you are experiencing (the Triton is also quite
an old chipset, even for a Pentium board).

it has something called voltage regulator output selector.
set for 3.5(default)
Click to expand...

WOW!
If this is truly a P55C (a P200MMX, which it could very well be, due to
the multiplier problem you described), it has a split voltage
architecture (normally, maybe there are some exceptions I am unaware of).
So, it should be supplied with 2.8 V Vcore and 3.3V VIO. But I guess,
given the sturdy .35 micron process, it might just survive ;))
If it is a regular P54C (a non-MMX Pentium), 3.5 V is actually the right
setting, in that case, don't mind my babbling.


Cheers
Sascha
 
WOW!
If this is truly a P55C (a P200MMX, which it could very well be, due to
the multiplier problem you described), it has a split voltage
architecture (normally, maybe there are some exceptions I am unaware of).
So, it should be supplied with 2.8 V Vcore and 3.3V VIO. But I guess,
given the sturdy .35 micron process, it might just survive ;))
If it is a regular P54C (a non-MMX Pentium), 3.5 V is actually the right
setting, in that case, don't mind my babbling.
Click to expand...

well the 200 has been in the machine for a year but since i've been told
to sell it i thought i would take a crack at the problem.

i've run intel's util and wpcuid and they both say 166. i've even
thought that maybe it is a 166 but let's say it is a 166, i should have
been able to overclock it to 200. but since it is stuck on 166 despite
the 3x66 setting it must be a motherboard thing.
 
Maybe you really have a Cyrix P166+ from IBM which run 166mhz but were
equivalent to a P 200. I had one like that I still have the chip, it
actually ran software that spec'ed P233 cpus.
 
i've even
thought that maybe it is a 166 but let's say it is a 166, i should have
been able to overclock it to 200.
Click to expand...

That is a nice thought but it is NOT a fact.
 
That is a nice thought but it is NOT a fact.
Click to expand...


Well, I believe he's just referring to the fact that the P55Cs are not
multiplier locked, so, he should very well be able to overclock it. If
it will run is another matter, although, from my experience, running a
166 at 200 is quite probable to work.



Cheers

Sascha
 
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