Temperature is overrated, C2-533@800 - no fan

jeremy806

Senior member
May 10, 2000
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Hi everyone, this is rather funny.

I now run my C2 533 @ 800, 1.8 volts core, Alpha heatsink, and no fan. The heatsink gets so hot that you can barely touch it. In addition, the only fans in my case are the PS fan and the GTS fan.

I ran with a very small HSF for a while, and figured that the large HS would make up for no fan, but I am guessing that it runs a bit hotter now.

If anyone tells me an easy way to measure the chip temp, I'll do it.

Last night, I was encoding divx, playing a video clip on repeat and surfing with no troubles at all. I also played a few games of NHL 2001 without a slip up.

Any thoughts on this? The computer is nice and quiet now. That Alpha fan rattles the entire case when I use it.

jeremy806
 

Mikewarrior2

Diamond Member
Oct 20, 1999
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Temperature is not overrated. A Celeron II does not output much heat at all. It can certainly sustain itself on a passive cooling setup, and with the built-in overheat circuitry, it isn't going to "fry" itself very easily either.



Mike
 

Gilby

Senior member
May 12, 2001
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And I've run my 233mmx for extended periods of time with no cooling at all...not even a case fan. Your point?
 

Killrose

Diamond Member
Oct 26, 1999
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Temperature is not overated. Put a decent fan/heatsink unit on that CII 533 and get it on up to at least 880-920MHz ;)

I had a CII 533a that would do 800MHz@1.55v . I tried overclocking it with just a med size heatsink only and could only get it up to 600MHz stable. The thing would lock up instantly from stone cold if I tried anything more than that. That alone proved to me that cooling is king when trying to overclock. With a Gorb it would do 920MHz @ 1.8volts.
 

PullMyFinger

Senior member
Mar 7, 2001
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Jeremy,
It's great that you are able to run your C2 at those levels without active cooling. However, the life expectancy of your CPU at those temperatures is in serious jeapardy, especially if you turn your computer on and off frequently. By turning the computer on and off frequently, you cause all of the circuits to expand and contract through their heat cycles, effectively streching all of the traces and interconnects w/in the circuits, including the microscopically small transistors w/in the CPU. A simplistic analogy to this is the old trick of taking a spoon and bending the handle repeatedly, eventually it breaks. One easy way to determine your CPU temp is to download a program called Motherboard Monitor. When you run it, it places a small temperature display in your system tray. If you say that you can't touch your heatsink, I'm guessing it's around 120+ F which is pretty darn hot for a CPU. A trick to help cool your case is to reverse your power supply fan so that it blows air out of the case instead of drawing air into the case. I did mine in about 5 minutes; take the power supply out (unplug the power first :)), take the fan out of the power supply, flip it over so that it blows into the power supply, and re-install the power supply in your case. Viola, cool air instead of pre-warmed power supply air. Good luck and happy overclocking.
 

PullMyFinger

Senior member
Mar 7, 2001
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Damn, sorry 'bout that.
It was not showing that it connected for the update so I stopped and re-tried several times. I hate slow connections!
 

mithrandir2001

Diamond Member
May 1, 2001
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I'd really like to see what your CPU's temp is in Motherboard Monitor. I run a 533@800 at 1.7V with a HSF. Under full load, the core temp can get up to 50C, especially when my room is warm. You are running no fan and 0.1V extra voltage. Your C2 CPU could be running at 65-70C for all you know. It may not crash at that temperature, but its life expectancy must certainly be reduced.
 

PullMyFinger

Senior member
Mar 7, 2001
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Yes, I would also be interested in seeing what temperature you are actually getting w/out active cooling. My C2 566/850 idles at 30°C and gets to 32°C under full load (Q3, Unreal Tournement, Sandra Burnin Wizard) at 1.65v. I have an Alpha heat sink w/ a small Sanyo fan.
 

Mikewarrior2

Diamond Member
Oct 20, 1999
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PullMyFinger,

What motherboard are you using? it appears that it has socket-thermistor readings, as a 2C spread from idle to full load is much smaller than normal for a p3/celeron2.



Mike
 

PullMyFinger

Senior member
Mar 7, 2001
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It's an Abit BH6 v1 and the temp readings I get from motherboard monitor are nearly identical to the readings in the bios. I did notice a slight 1-2 degree increase in the last week which could be attributed to either the warmer weather or my re-mounting of the heatsink on the CPU. I'm using an Abit SlotketIII, also.