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Odd temp spikes on new (to me) P III system

G

Gilby

Senior member
I aquired, from a friend, an old P-III system. I've been setting everything up, and today put in MBM5. Temps seemed a bit high at idle (around 50C), but I don't really know anything about Intel stuff from the period.

But, while looking up some info on the chip, the temp spiked up to the 70s and MBM gave me a warning. I turned the system off to let it cool down. After a good cool down period, I turned the computer back on and the temps were still registering in the high-70s...but then they jumped back to the low 50s. I started watching the temps and they would jump up and down, mostly down, between the low 50s and about 80. I tried running Prime95 to see what happened under load, and the temp jumped to and stayed in the mid-high 80s, even once reaching 90.

Now those temps don't seem right to me, but I'm not sure if I should trust them. The CPU reads consistantly between 48-52 when not being torture tested by prime and jumps to about 86 as soon as I start a torture test--and goes back down about as soon as I stop. I noticed that the CPU fan goes up to high when running a torture test and back down when not.

I should mention that I grabbed ASUS Probe and see the same behavior with it as MBM showed.

The system is a P-III 600 EB on a ASUS P3V4X. Do these things really run up near 90C with Prime95 reporting no errors? Or should I assume a faulty temp probe is adding 25-30 degrees to the readings?
 
is it a katmai(it used a slot isntead of a socket?) my dell (dont worry it was free) p3 550 iis also really high like that, goes up to like 75 celcius according to sisoft sandra(mbm5 doesnt work wiht this mobo or dells or something queer) its syas 49 celcius now

but i have no way to be sure so yeah, i can tell you tho that the bios and mbm5 on my pp3 733 socket 370 does easy stuff lieks urfing and sutff at a comfortable temp or 31 celcius and maxes out at 42 on lik the hottest of days but in th ewinter when the house temp is like 19 celcius it maxes at 39 or 40
 
Slot Coppermine.

And I wouldn't think the CPU would survive up near 90C. A friend upgraded another friend's computer, and I got the case with MB and CPU already inside. As I didn't change anything, I'm assuming the system ran as-is for the years my friend had it. Just wondering what is normal for this chip and board.
 
How much L2 cache is on the CPU?

If it's 256K, you have a Coppermine. If it's 512K, you have a Katmai.

As Dough says, 70C would be normal for a Katmai. Coppermines should run a lot cooler though-- My P3-600E never goes above 50C under load, and that's when it's overclocked to 800mHz.

I would get an aftermarket heatsink and reapply thermal grease properly-- The stock intel fansink is pretty crappy.

 
Coppermine, according to CPU-Z. And although I'm pretty sure it has the stock heatsink, it's not getting anything else. It's a cheap secondary system--if anything gets cash it'll be my XPM. I'm just wondering about the temps that seem to change by about 25 degrees in about the blink of an eye.
 
Right. It is a coppermine, and the temps at idle when it doesn't spike seem to range from 47-50. That, plus the fact that it is giving absolutely no errors, is why I don't think it's actually going to that 87-90 range that MBM is reporting. I'm just trying to figure out why it's doing this.
 
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