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Hot Pentium D 945

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Hi I just purchased a Pentium D 945 and motherboard. It's idle temperature is ~60c surely this can't be normal. I'm sure the standard HSF is installed properly as it's pretty warm and seems to be moving heat.

I don't want to boot it up again incase I fry the sucker. Any suggestions.

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Not only what are you using ti measure the temp, but what do you mean by boot up? In BIOS or with an OS(windows). Intel max spec is 68C. My 940 runs hot when in BIOS, but not that hot. With Windows up, at idle 42, 51 with both CPU's running ~100%, Using a Zalman cooler.

Are you sure your heatsink/fan is installed properly. I've heard of stock coolers not locking to the motherboard securely causing a loss of contact between the heat sink and CPU

Reply to t53186
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Sorry for the lack of details, it was a hasty post. I was using the hardware monitoring in the BIOS.

I'll triple check the HSF is making contact.

Thanks

Reply to s-twig
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Confirm those temps by touch; if after iddling the heatsink fins are that hot (60°C is something like black iron bar left in the summer sun) then you really have to check how the heatsink is placed on the CPU and better put something better than the stock cooler on it, Pentium Ds are thehottest CPUs around now.

Reply to m25
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Working with computers, we have been told there is a possible malfunction with the Heatsinks themselves, such as the following

---------------------------

WARNING:
engineering defect in stock Intel heatsink/fan units
for LGA-775 socket CPUs

(This generic message only applies to
Intel CPUs with LGA-775 socket and
stock Intel heatsink/fan units.)



The problems with high CPU temperatures
are most probably the result of improper seating
of the stock Intel heatsink/fan unit ("HSF" ).

That heatsink and fan do dissipate heat quite
adequately, as long as the HSF maintains
enough downward pressure on the top of
the CPU chip.

However ...

the 4 pronged fasteners are not gripping properly,
and this results in less downward pressure on the
top of the CPU chip: less downward pressure
translates directly into higher CPU temps.

Also, the fasteners are made of a material
that appears to be "creeping" after many cycles
of heat and cold, which further reduces the
downward pressure on the top of the CPU chip.

A short-term solution is to unlock and re-lock each
fastener, while pressing down with your thumb on
the fan housing directly above each fastener.
Doing this one thing reduced our CPU temp from
140 F. to 100 F., which helped isolate the problem.

Best solution is to switch to a superior HSF
with a proper backing plate. We prefer the
ASUS VR Guard Series, because of its superior
engineering for cooling the voltage regulators
on recent high-end ASUS LGA-775 motherboards.

These photos show evidence of improper seating
on a recent ASUS motherboard with stock Intel HSF:

http://www.supremelaw.org/systems/heatsinks/

Also, Intel's Thermal Interface Material ("TIM" )
is too thick from the factory, which also results
in improper seating i.e. all 4 pronged fasteners
do not "lock" properly, even when applying a
lot of downward pressure on each fastener.

This TIM should be removed and replaced with
a razor-thin layer of Arctic Silver (or comparable
thermal paste) -- NO OOZING PLEASE!!


I hope this helps.


p.s. If you purchased your computer from a company
that uses Return Merchandise Authorizations ("RMA" ),
you should start a new RMA so that this defect and solution
are reported formally to your supplier.

----------------------------------------------------

sorry if this is "spam"

Reply to danjal
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Thanks for the tip m25. I've reseated the HSF, I'm still sure I had it right the first time, the idle temp in the BIOS hardware monitor is now reporting 55c and that's with the CPU fan control turned off.

I'm not sure, but the two other reported temperature, internal and remote both seem to be rather high too, ambient temperature would be approximately 20c and both of those are in the 30s with the PC only running for a matter of 60 secs.

I'm wondering if there is a live CD or something I can boot off that would report the CPU temp, or would it be the same anyway. The reason I ask for that is because I'm too scared to leave it running long enough to get Windows installed.

Any ideas would be great.

Thanks again

Reply to s-twig
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Geez thanks danjal. That's very informative. Appreciate that.

Reply to s-twig
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Then check your thermal grase and if I were in your position, dealing with a Pentium D, wahtever the temps, I'd buy a good Copper-Aluminium Zalman cooler for it. Not an only Copper one because it's too heavy and could damage the board.

Reply to m25
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the humor for me is that we've been advised that if you buy a chip with a stock heatsink to by a better heatsink... i questoined back that should they supply us with a working heatsink first.. just thought it's somthing all you 775 users would love to say back ;)

Reply to danjal
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PDs and Pentium 4s are really hot and a good cooler can make them drop some 5-6°C that is not bad when you approach 65-70°C on load. My office P4 (3G) now iddles @ 46 (21°C ambient) on stock Intel cooler.

Reply to m25
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Hi

I heeded the advice and purchased a Zalman CNPS9500. The CPU now idles around 49c. I'm still not sure if this is okay considering this is a pretty big HSF. That's what I would have expected from the stock HSF.

What does everyone else think?

Reply to s-twig
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Quote :

PDs and Pentium 4s are really hot and a good cooler can make them drop some 5-6°C that is not bad when you approach 65-70°C on load. My office P4 (3G) now iddles @ 46 (21°C ambient) on stock Intel cooler.



well
P4's run hot
D8xx run hot
D9xx do not run hot.
even with a zalman 7000 cooler @ 4.2 Ghz my idle was 42C
max temp now is 57C both cores(water)

Reply to kwalker
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Maybe worth mentioning is that the motherboard is an Intel D945GNT, are there known issues with this?

Reply to s-twig
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Quote :

Not only what are you using ti measure the temp, but what do you mean by boot up? In BIOS or with an OS(windows). Intel max spec is 68C. My 940 runs hot when in BIOS, but not that hot. With Windows up, at idle 42, 51 with both CPU's running ~100%, Using a Zalman cooler.

Are you sure your heatsink/fan is installed properly. I've heard of stock coolers not locking to the motherboard securely causing a loss of contact between the heat sink and CPU

Agreed. My P4 2.4A@3726 idles at 51.5C in the BIOS, but ~44C in Windows(XP). If you're afraid to install Windows, try underclocking the CPU(and lowering vCore) in the BIOS...then install Windows. Then once you get your programs, etc. installed, check idle temps in Windows. If the temps look more reasonable, then go into BIOS and raise the Speed/vCore again. GL :)

PS. This assumes that your BIOS has CPU speed/voltage adjustments.

Reply to 1Tanker
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Thanks mate. I'll do that, I was wondering if the reported speeds in the BIOS may be different to what Windows would report.

Thanks.

Reply to s-twig
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UPDATE:

I've installed Windows and using the Intel Desktop Utilities, my idle temperature is about 32C and under load about 49C. BIOS is still reporting an idle temp of ~48C.

Any ideas why? Can I trust the Desktop Utils?

Reply to s-twig
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