Running temps for a PIII E 800mhz Coppermine

Dec 21, 2006
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Well, I was running this PIII @ 920 mhz, but the system seemed hot (idling at 60 C) so I bumped it back to stock and installed another case fan to try to improve air flow. I just checked again in the bios, again @ stock, and the machine is idling 55 C... still seems pretty hot. Anyone have experience with this particular core and know its safe operating temps/voltages? If it only goes up 5 C at idle from the OC, is it safe to assume that the core just runs hot and I have little OC headroom? Thanks in advance.
 

StopSign

Senior member
Dec 15, 2006
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Heatsinks back then were not like the heatsinks we have today. Heat dissipation in general was rather poor.
 
Dec 21, 2006
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Thanks for the info, it seems like the PIII is just a hot chip... looks like i'll have to stick with stock or a meager OC...
 

SexyK

Golden Member
Jul 30, 2001
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PIII Coppermine's weren't hot chips at all. They were far cooler than the .35 and .25 PIII's they replaced. As yuchai points out, they only dissipate 20-30W. Although the process is much larger than today's chips, the PIII was so much less complex, had so many fewer transistors and ran at clock speeds so much lower, there's no reason it shouldn't run much cooler than today's CPUs. With proper cooling you should be able to keep temps way below where they are currently.
 
Nov 15, 2006
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I agree, take a look at the cooling... If you got very serious about this you might want to look at modifying a current HSF to work on that old system. Something with a copper core and a decent radiator\fan assembly would do wonders for the cooling. As far as speed goes, its never going to be fast.
 

craftech

Senior member
Nov 26, 2000
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Don't overclock it. It will end up causing problems. The chip will run just fine at stock settings. Concentrate on getting a faster hard drive for the OS and use W98SE or W2000 (with unnecessary crap disabled). That will yield far better results with that chip.

John
 

fleshconsumed

Diamond Member
Feb 21, 2002
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Coppermine a hot chip? You gotta be kidding me. Yeah, it was a 0.18CPU, but my family and I owned a bunch of them, and none idled more than 32 degrees C with stock cooler. If your coppermine idles at 55 you're doing something wrong, either the thermal contact is bad for whatever reason (didn't clean the surface, didn't apply thermal interface, concave heatsink sufrace, etc) or there is bad ventilation inside the case with no exhaust fans save for the PSU.

Now Thunderbirds and pretty much any other Athlon XP chips, those were hot.
 
Dec 21, 2006
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Well, I got it idling down to 35 degrees at stock, so I'll see what kind of temperatures I get under load and how far I can push this thing.
Thanks for all the advice and information.
 
Mar 4, 2005
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The P3 850 Coppermine of my wifes idles at 40c according to the Abit BE6 ll bios.
The stock retail Intel cpu has one small, little fan blowing on the hs.
In the lower front of the cheap old case I have one small[60mm?] intake fan and one exhaust fan in the top rear of the same small size.
I could never get it to o/c much, maybe 50mhz. I didn't know what i was doing for one thing and it didn't cooperate with me:eek:

Forgetting overclocking, the P3 850 is like a tank
I actually play MOHAA and Spearhead on it because Spearhead won't run unless I use older drivers like the 66.93's I'm running for the GFTi 4200.

The wife uses it for email, surfing and making work schedules using MS Excell.
It's got a cdr burner that burns a fast as mine! 384mb ram and XP/Home
She sees no reason for new pcs because " they all look the same as hers"

 

nyker96

Diamond Member
Apr 19, 2005
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I remember back then the heatsink are like size of a ... a tiny something ... well it's small.
 

dwcal

Senior member
Jul 21, 2004
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The stock FSB on the 800E is 133Mhz, so your OC is limited by that. 920Mhz is a 153Mhz FSB, and no PIII MB could go much higher than that. The 100Mhz Coppermines were better overclockers.

About the cooling, a Socket A cooler fits too, and they made some pretty beefy coolers for Athlons XP's.