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overheating problems

Discussion in 'Hardware' started by squeck, 11 Jan 2005.

  1. squeck

    squeck Lurker

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    i've got a prescott P4 3.6GHz and an ASUS P5AD2 motherboardand i am having trouble with the processor overheating. a couple of weeks ago it ran hot but didn't get much over 70° because the fan went into overdrive and got up to about 4500rpm, however recently the fan seems to have stopped going faster than 2600rpm.

    the bios has Q-Fan and it is set to try to keep the temp at 56°. the last week though the temp has been getting up to over 90° when on the internet and downloading stuff. when it get to high 90°s it shuts down. i have just turned it on and it was at 84° with 1% cpu usage! :grr:

    there seems no way i can manually set the fan speed to 4500rpm and i can't think of anything to do. ideas anyone?

    :edit: i thought i might have bios trouble so i have just tried flashing the bios :duh: it wrote 10% then was at 96° and switched off. i am assuming that i have just broken it. that right? :waah:
     
  2. squeck

    squeck Lurker

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    well thank god for bios recovery cd's! :rock: bios is working again but temp problem still the same.
     
  3. squeck

    squeck Lurker

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    bump :)
     
  4. ChromeX

    ChromeX Minimodder

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    What sort of heat sink are you using? I remember when I got my prescott and saw the temps I nearly fainted.
     
  5. Kensei

    Kensei What's a Dremel?

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    The Prescott has to be the worst chip ever designed. Uber power hungry, hot as hell and riddled with microcodde issues.

    Anyway enough prescott bashing. Get a better cooler, Try the Coolermaster Hyper 6, Big, Ugly, Scary as hell, but cools about as well as cheaper water cooling.

    As a cheap interim, replace your CPU fan and run it straight from your PSU, you Mobo fan control may well be fooked. You'll get a fan fail error message on boot but that shouldn't be a problem.
     
  6. squeck

    squeck Lurker

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    well i'm using the stock intel fan at the moment, but i've bought a gigabyte 3D rocket pro which should be delivered later today. the reviews of it seem pretty good, and it plug directly into the psu so the motherboard fan control won't be a problem. more news when i get the new cooler!
     
  7. Zephyr

    Zephyr Go V-Boy, Go!

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    Try the new cooler is basically all I can say right now. If you stick the new hsf on and it still is getting way hot, then you have a more serious problem.

    BTW ~ The temps you gave ARE in Celsius......right???
     
  8. squeck

    squeck Lurker

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    14°C 3.6Ghz Prescott P4 using air cooling

    yeah all temps are in celsius, the new hsf hasn't been delivered yet :grr: so i thought i'd try again.

    i've reseating the fan and plugged it into the chassis fan pins on the motherboard. i've also suspended another fan with string blowing across the processor towards the 12cm fan at the back of the case. the case is open and lay on its side. here are some pics!

    [​IMG]

    [​IMG] [​IMG]

    now the interesting part. according to both the ASUS Ai booster software and Motherboard Monitor my processor is running at a rather cool 14°C - room temp is 15°C

    [​IMG]

    THIS IS A 3.6GHz PRESCOTT!! and i appear to have cooled it to below ambient temp using just an extra fan. :jawdrop:

    the heatsink is not even slightly warm, but does anyone know where the temperature sensor is on the P4? surely the fan must be blowing directly onto it! :eyebrow:

    also the CPU is not throttling at all which leads me onto my next quesion. assuming that the CPU temp sensor is wrong and the processor is much hotter than it thinks it is, does this mean that the CPU will not shut down if it overheats? because i am quite worried by that possibility!

    cheers guys
     
  9. TMM

    TMM Modder

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    you can't possibly cool anything below ambient air temp. The temp sensor is embedded into the actual cpu (considering the board is reading off the on-chip sensor) , so its not possible to directly blow air onto it either.

    edit: but if there is an external sensor somewhere on the board, then yes it is possible that you are directly cooling that sensor.
     
  10. squeck

    squeck Lurker

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    any ideas whats going on? cos the temp sensor is reporting about 20° now (light use) ambient is still 15°, but a week or two ago it would be about 60°C at the moment
     
  11. TMM

    TMM Modder

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    what happens when you turn off the extra fan? does the temp slowly rise again?. If the heatsink remains completely cold then i would assume that there isn't good contact between the cpu and the heatsink
     
  12. squeck

    squeck Lurker

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    also is there any way i can manually adjust the speed of the fans? at the moment the fan on the CPU (power fan in monitor pic) is running at 2500rpm and the suspended fan is running at 2250rpm. if i could speed these up a bit (the cpu fan goes up to at least 4500rpm) then i wouldn't be so worried. noise isn't a problem - i'll just turn my speakers up! :rock:
     
  13. squeck

    squeck Lurker

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    well i've unplugged the extra fan - lets see if it explodes!

    :edit: have starting folding so i have about 50% cpu usage
     
  14. squeck

    squeck Lurker

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    well the extra fan doesn't seem to make any difference :grr: but temp is now steady at 37° while folding ( > 50% load )

    this still doesn't really make sense because until now i have never seen it below 46°C and that was when the fan still went up to 4500rpm. surely putting the case on its side can't make that much difference (from 96°C yesterday!)
     
  15. Dgephri

    Dgephri What's a Dremel?

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    interesting to hear exactly how true the Review comments abou the 3.6E really are.

    I have one, P5AD2-premium, and that huge 120mm Thermalright Heatsink, but I haven't fired it up yet. Hope temps are workable for some reasonable noise level.

    Keep us posted.
     
  16. squeck

    squeck Lurker

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    temps are hot but don't seem too bad most of time i think the best idea is to stick on a big wooly jumper and sit with the window open - its about 13°C in my room :brrr:

    trouble with mine is now temps are ridiculously low. i must have a temp sensor problem - i've probably burnt it!
     
  17. squeck

    squeck Lurker

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    well i've got the new cooler, its quite impressive but it did require a worrying large amount of force to install!

    now as i write this the temp sensor in the processor says that it is idleing at between 18 and 20°C - this temp is reported as the same in the bios as well. obviously this is not the correct temp, so is it possible that the processor temp sensor has been permanently damaged when the processor was running at 96°C?

    i have flashed the bios (at the beginning of thread) so there shouldn't be a problem there.

    anyway... here are some pics! oooh blue!

    [​IMG]

    [​IMG]
     

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