CPU Fan

[ctsracer]

I think Thommie and Asha are right. Sounds like the heatsink is not properly touching the top of the Pentium Chip. This would cause the CPU temperature to quickly rise since proper cooling is not provided by the heatsink. During idle or low loads, the temperature would be low but under heavy load, the temp will rise quicly.

[CrowdAds]

[JackBrtN]

Well....I tried with two different fans:

- Thermal master

- Thermal total solution by extreme technology


...but is right for the boot sequence to be so heavy for the processor???

[kimber_abx]

those temps are way high.either your not getting good contact with your heatsink or diode's not reading right.with my pal6035 and no fan my chip only gets to about 34c in idle state.i would think at that high of temp you'de get lock ups.what are you using for thermal interface?same thing happened to my buddy when he forgot to put compound in betwen processor and hs.

[Asha_abx]

Yes it is normal that you have an heavy load during the boot process and in the bios. So yes you would expect rising temperatures during this time. But NOT as high as you have them.
Since the socket of the cusl2 (like all flipchip mobo's) is on one side a little higher than the cpu it is easy to put the cpu on the wrong way. With some coolers (for example the goldenorb) there is only ONE right way to put the heatsink on the cpu. I did this myself at first and had some very high temperatures then too.

grtz. Asha

[ED_H]

I have a p3 866 with a stock heatsink/fan and I boot around 41/42 cel. and idle around 32/33 cel. and I thought that was a little on the high side.

[sanguemisto]

for JackBrtN:touch your dissy...it must be average....if it is too hot...the dissy isn't working good....also if it is too cold.....
Traduzione in italiano......
Giusto x evitare che gremi la cpu.....tocca subito il dissy se scotta(e x scottare intendo che non puoi tenere su la mano!!)hai qualche problema......se è troppo freddo allora è il dissy che non ha un buon contatto con la cpu.....Deve essere tiepido.....ricordati di togliere il pad conduttivo che trovi sui dissy...quando li compri...e di usare la pasta al post del pad conduttivo.....se hai bisogno di aiuto mi trovi qui:adabbene@galactica.it

[Tom_abx]

I'm also getting some weird results.

I have two very similar computers running brand new CUSL2-C boards. One uses a retail package P3-866 (not overclocked) and Probe shows it running around 27C at idle and maybe into the mid 30s under other light use conditions. The temperature reported by Hardware Monitor in the BIOS says the cpu runs in the low 40s C.

The other mobo uses a P3-700 (not overclocked) and it typically runs around 31-34 C at idle according to Probe. However, Hardware Monitor says its temperature is in the 80s C! What gives? One or the other is totally wrong. This cpu has a rather large heatsink/fan combination made by Cofan USA. It's supposed to be good for 1 Ghz and above, but this 700 runs hotter than the 866.

Both heatsinks use the stock (probably poor) "sticky thermal stuff."

Any ideas?

Tom, Seattle

[Mode]

Does this higher temperature occurs only during loading windows? what's the CPU temerature at full load? If your full load temperature is that high then that means the heatsink does not have good contact with the cpu. Because even with the stock heatsink/fan I was able to overclock my PIII700E@933 with temp 51degree C at full load.

Check if your heatsink's contact with the core of the CPU as others suggested. Use some good thermal compound because air is a bad conductor.

[high_lander]

As I recall, you can't run both ASUS probe and MBM 5 on the same PC, becuse they screw each other up and give false readings...please correct if I am wrong.

When putting on a new heatsink, I always take the board out of the case as it helps in the mounting of the heatsink and fan to the chip. Take a few seconds to shine a flashlight (or torch to our European friends...) from BEHIND the heatsink. That way you make sure there is contact. It may take a little longer to do these things, BUT it beats having to buy a new processor. Do not gob on the compound... spread lightly like you are butterung toast, but cover completly. Use a credit or debit card. I use my A+ card, as it seems appropriate..

If you look in the BIOS, your temps are at thier highest, as the BIOS uses 100% of your CPU. The temps shouldn't be higher that 45C. If it is higher, make sure the fan is blowing away from the heatsink, as you want to draw heat AWAY....

Sorry for the long post, but I have spent many an hour trying to defeat the heat demon, but it's always there...

[DaveM]

No matter what the guy at the store tells you, if your fan has a little orange sticker rubbery thing on the heat sink... never never never peel the rubbery thing off!!!!!

That is the heat transfer contact for the heatsink.

If for some reason you do peel that first layer rubbery thing off and are left with what looks like woven threads, then by all means use a razor blade and remove the remaining, now damaged, heat transfer device and install the heatsink with a liberal amount of silicon heat transfer grease!!!

Or go buy a new CPU cooler and try it again!!!

[Tom_abx]

I solved the problem with the very high cpu temperature showing up in Hardware Monitor. I junked the fan I had and intalled a Thermaltake FC0370 Orb fan. It works like a charm and now my cpu temperature is 27-28 at idle running at stock 700 MHz. Even running at 933 MHz shows about the same temperature, but I was able to lock the cpu by putting a heavy strain on it through the video system.

I highly recommend the Orb cooling fan. It's easy to install and fits great... looks good too.

[jian]

If your heatsink and fan is installed correctly, then I think the reading is caused by an inaccurate sensor or a buggy board, or bios.

I recently noticed the same problem on my board. When you enter the bios, quickly go to hardware monitor and check your cpu temp. Mine starts of at 60-70c and then quickly goes down to an idle temp of approx 40-42 (600e @ 900 1.95v, system temp 25c)

However, on entering windows motherboard monitor notes the temp as approx 41c and then slowly settles at an idle temp of approx 36c.

Now, I do not know which one of these readings is correct but I personally think that there is a bug with the board or bios as I very much doubt that booting up puts such a stress on the cpu. (if I am wrong please correct me).

At the same time, I do not think that the board is overvolting the cpu at startup otherwise cucl2(c) owners would not be having this cold boot problem.

If anyone has read my other post about motherboard monitor and the restart problem, then you'll know what my reasoning is based on.