P4R800-V Deluxe - CPU Overheating


M

Milos Pedersen III

The Intel 2.8Gig CPU on my P4R800-V Deluxe has been seriously
overheating of late. It actually got to 82°C and spent about a
week radomly shuting down before I twigged that it was an
overheating issue. I immediately cleaned the inside of the
case and the extra case fans. I have been able to drop the CPU
temp to between 72°C and 76°C depending on load (monitoring
the CPU temp with ASUS Probe). The apparent random shutting
down has stopped but after doing some research I've discovered
that the optimum operating temperature for my 2.8Gig Prescott
is in the middle 40's to the middle 50's celsius! This led me
to do a really intensive cleanup involving dismantaling the
case, hand cleaning the case fans and the CPU fan (but not
removing it from the heatsink). Bottom line is I reduced the
temperature a further 10 or so degrees to a idle temp of 61°C
in an ambient temperature of 26°C. A vast improvement but not
good enough.

QUESTION: I'd like to get the temp down another 10°C or so and
want to add an after-market heatsink and fan for my CPU. I'm
looking at purchasing a 'Zalman Ultra Quiet CPU Cooler
CNPS7000B-AlCu' and I'd appreciate it if the group members
would comment on this choice.

QUESTION: I'd also appreciate comments on whether or not there
will be a temperature advantage by replacing the OE
Northbridge Heatsink on the P4R800-V Deluxe with a 'Zalman
Northbridge Heatsink ZM-NB47J'?

Hardware Specifics:

- Case is a 24" tower (side covers always on and unused PCI
slots covered)
- Intel 2.8G CPU (Intel OE heat sink and fan combo)
- Case fans include two (2) which draw out air to the rear of
the case and a single fan drawing air in from the lower front
of the case.
- Power Supply is 400W and of course has its own fan
- I have two SATA drives in removable cases that have their
own 1" fans at the rear.
- I also have three (3) drives mounted internally
- One (1) DVD Burner (IDE)
- One (1) CD Burner (SCSI)(this will be removed soon)

TIA and peace

Milos
 
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P

Paragon

82 CELCIUS!!!! wow you really need to do some cooling work
First off, I have an asus with a 2.8 as well, and I reccomend that you
buy a COPPER heatsink, a powerful fan for it, and some artic silver
thermal paste. Under zero load my computer runs at 35 celsius and under
extreme load it runs at approximately 45 celcius. For the northbridge
question....Touch the heatsink..does it feel incredibly hot? if so,
then do replace it, again preferably with something copper and good
thermal paste.
Additionally try to add some more fans where ever you have spots for
them, the higher the CFM the better. Look into PCI slot fans too.
Good luck and email me if you have any questions.
 
M

Michael W. Ryder

Milos said:
The Intel 2.8Gig CPU on my P4R800-V Deluxe has been seriously
overheating of late. It actually got to 82°C and spent about a
week radomly shuting down before I twigged that it was an
overheating issue. I immediately cleaned the inside of the
case and the extra case fans. I have been able to drop the CPU
temp to between 72°C and 76°C depending on load (monitoring
the CPU temp with ASUS Probe). The apparent random shutting
down has stopped but after doing some research I've discovered
that the optimum operating temperature for my 2.8Gig Prescott
is in the middle 40's to the middle 50's celsius! This led me
to do a really intensive cleanup involving dismantaling the
case, hand cleaning the case fans and the CPU fan (but not
removing it from the heatsink). Bottom line is I reduced the
temperature a further 10 or so degrees to a idle temp of 61°C
in an ambient temperature of 26°C. A vast improvement but not
good enough.

QUESTION: I'd like to get the temp down another 10°C or so and
want to add an after-market heatsink and fan for my CPU. I'm
looking at purchasing a 'Zalman Ultra Quiet CPU Cooler
CNPS7000B-AlCu' and I'd appreciate it if the group members
would comment on this choice.

QUESTION: I'd also appreciate comments on whether or not there
will be a temperature advantage by replacing the OE
Northbridge Heatsink on the P4R800-V Deluxe with a 'Zalman
Northbridge Heatsink ZM-NB47J'?

Hardware Specifics:

- Case is a 24" tower (side covers always on and unused PCI
slots covered)
- Intel 2.8G CPU (Intel OE heat sink and fan combo)
- Case fans include two (2) which draw out air to the rear of
the case and a single fan drawing air in from the lower front
of the case.
- Power Supply is 400W and of course has its own fan
- I have two SATA drives in removable cases that have their
own 1" fans at the rear.
- I also have three (3) drives mounted internally
- One (1) DVD Burner (IDE)
- One (1) CD Burner (SCSI)(this will be removed soon)

TIA and peace

Milos
How much clearance is there between the CPU heatsink and the power
supply? I had similar problems with a P5P800 where my case had less
than an inch of clearance between the two. I could feel the power
supply heating up. Replacing the case with a better case with better
cooling dropped the temperature of my 3.4 GHz Prescott to around 40
degrees or less at idle.
Another thing to look at is the temperature monitoring program. Probe
was showing very high temperatures on my P4T-E with a 2.0 GHz Northwood
but the exhaust air was cool. Using Motherboard Monitor showed my
temperatures to be under 40 degrees, a difference of almost 20 degrees.
 
O

Old Bugger

The Intel 2.8Gig CPU on my P4R800-V Deluxe has been seriously
overheating of late. It actually got to 82°C and spent about a
week radomly shuting down before I twigged that it was an
overheating issue. I immediately cleaned the inside of the
case and the extra case fans. I have been able to drop the CPU
temp to between 72°C and 76°C depending on load (monitoring

<snip>

Way too hot.

I run an Intel P4 2.8 GHz chip on an Asus P4P800 Deluxe motherboard. It is overclocked 10%, runs 2 gig of
memory, has 3 hard drives and a DVD drive, SCSI card, extra network card, capture card, SB Audigy sound card
and a 400W PSU. The case it is in makes things a tight squeeze (an old Aopen desktop case). There is an
extra cooling fan at the front of the case and a "sideways" cooling fan next to the gfx card that extracts
heat via an expansion slot.

I run the standard Intel heatsink but removed the Intel supplied thermal pad and used Arctic Silver 5.

That computer has been running all day today capturing video and the CPU temp is 32 C, M/B temp is 33 C.
Ambient room temperature here is a little cool at 17 C. Even in summer the CPU temp rarely exceeds 42 C.

I would suggest that you might have a bit of grit on top of the CPU. This would prevent the heatsink making
effective contact with the CPU housing. I would suggest you remove the heatsink, clean off any thermal
pad/thermal compound there and use some Arctic Silver. Follow the instructions at:-

http://www.arcticsilver.com/arctic_silver_instructions.htm

And all will be well. ;-)
 
M

Milos Pedersen III

82 CELCIUS!!!! wow you really need to do some cooling work
First off, I have an asus with a 2.8 as well, and I
reccomend that you buy a COPPER heatsink, a powerful fan
for it, and some artic silver thermal paste. Under zero
load my computer runs at 35 celsius and under extreme load
it runs at approximately 45 celcius. For the northbridge
question....Touch the heatsink..does it feel incredibly
hot? if so, then do replace it, again preferably with
something copper and good thermal paste.
Additionally try to add some more fans where ever you have
spots for them, the higher the CFM the better. Look into
PCI slot fans too. Good luck and email me if you have any
questions.

Thanks for the reply. Your 35°C to 45°C range is just amazing!

- I've read that an all copper heatsink is too heavy for the
P4 mount and can cause damage. Any truth to this? I know that
it is recommended that you remove an all copper heatsink if
you're going to be moving your computer but I'm worried that
there could be damage if the case is bumped accidently with a
knee or the like.

- the Northbridge heatsink is pretty warm, bordering on hot. I
can't hold my finger there for any length of time ... for
$10.00cdn I'm going to replace it.

- I've got 3 (80mm) case fans installed already. One drawing
cool air from the front of the case and two at the rear of the
case drawing air out. I'm going to replace my current case
fans with AcoustiFan™ products.

Thanks for the input and giving me a temperature goal ...

peace

milos
 
M

Milos Pedersen III

How much clearance is there between the CPU heatsink and
the power supply?

Just checked and my CPU fan/heatsink is only about an inch to
and inch and a half from the bottom of my 330W power supply
I had similar problems with a P5P800
where my case had less than an inch of clearance between
the two. I could feel the power supply heating up.
Replacing the case with a better case with better cooling
dropped the temperature of my 3.4 GHz Prescott to around 40
degrees or less at idle.

Impressive idle temp!
Another thing to look at is the temperature monitoring
program. Probe was showing very high temperatures on my
P4T-E with a 2.0 GHz Northwood but the exhaust air was
cool.

ASUS Probe is within a degree of what my BIOS is reporting. I'm
using ASUS Probe v2.24.10
Using Motherboard Monitor showed my temperatures to
be under 40 degrees, a difference of almost 20 degrees.
I tried to install Motherboard Monitor but unfortunately the
P4R800-V Deluxe isn't supported.

thanks for your input and recommendations ...

peace

milos
 
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M

Milos Pedersen III

Way too hot.

I run an Intel P4 2.8 GHz chip on an Asus P4P800 Deluxe
motherboard. It is overclocked 10%, runs 2 gig of memory,
has 3 hard drives and a DVD drive, SCSI card, extra network
card, capture card, SB Audigy sound card and a 400W PSU.
The case it is in makes things a tight squeeze (an old
Aopen desktop case). There is an extra cooling fan at the
front of the case and a "sideways" cooling fan next to the
gfx card that extracts heat via an expansion slot.

I run the standard Intel heatsink but removed the Intel
supplied thermal pad and used Arctic Silver 5.

I'll remove the pad and use AS5
That computer has been running all day today capturing
video and the CPU temp is 32 C, M/B temp is 33 C. Ambient
room temperature here is a little cool at 17 C. Even in
summer the CPU temp rarely exceeds 42 C.

If you can get these low temps within a tight space, lotsa
heat generating hardware and running a load means I really
need to address this problem.
I would suggest that you might have a bit of grit on top of
the CPU. This would prevent the heatsink making effective
contact with the CPU housing. I would suggest you remove
the heatsink, clean off any thermal pad/thermal compound
there and use some Arctic Silver. Follow the instructions
at:-

I agree that there must be a seating problem with the CPU
heatsink as these temps I'm running are way out order. I'm
planning to replace the OEM Intel fan/heatsing with a ALCU
Zalman 7000B ...
Thanks so much for your input ...

peace

milos
 
M

Michael W. Ryder

Milos said:
I'll remove the pad and use AS5




If you can get these low temps within a tight space, lotsa
heat generating hardware and running a load means I really
need to address this problem.




I agree that there must be a seating problem with the CPU
heatsink as these temps I'm running are way out order. I'm
planning to replace the OEM Intel fan/heatsing with a ALCU
Zalman 7000B ...
That may be a good idea as part of the problem I had with my P4T-E after
removing it from one case and moving it to a different one is that part
of the original plastic retention mechanism wouldn't latch down
correctly. This left only half the heatsink contacting the CPU and my
temperatures were over 60 degrees at idle. Replacing it with a new
heatsink with a better retention mechanism dropped the temperatures back
to where they should have been.
 
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M

Milos Pedersen III

The Intel 2.8Gig CPU on my P4R800-V Deluxe has been
seriously overheating of late. It actually got to 82°C and
spent about a week radomly shuting down before I twigged
that it was an overheating issue.

Just a quick update ...

I completely tore down my box (removed MB from case) and
thoroughly cleaned it including case and cpu fans (including the
blades), dismantled CPU heatsink/fan and cleaned contact area
with isopropyl alcohol, removed and cleaned CPU contact area
again using isopropyl alcohol. I then applied Arctic Silver 5 as
recommended and reassembled everything.

The CPU temp range is now 48-9°C @ idle and 56-8°C under heavy
load. Not ideal but a serious improvement from where I was five
days ago!!!

I'm amazed by what a thorough cleaning will accomplish and what
a detrimental effect dust and dirt can have in terms of
temperature.

Now that I'm in a more normal temperature range I can add quiet
case fans and the 'Zalman Ultra Quiet CPU Cooler
CNPS7000B-AlCu' at my leisure.

Thanks again

peace

milos
 

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