Overheating

[Chris Stolworthy]

Hey guys I have a problem and I am not sure where to post this. I have just
built myself a new sys, and according to motherboard monitor it is
overheating.
at Idle I get temps of about 50 C and at full load I got it upto 70 C! Here
are the specs
Abit IC7-G
P4 2.8E (Prescott)
1 GB OCZ System ram Dual Channel Pc3200
1 Barracuda Sata Raptor 120 GB
Alpha Pal S-PAL8952T

Now the thing is that I think "MAYBE" the sensor diode is bad or something,
because even those these temps are close to what is reported in the BIOS, I
put my hand on the heatsink at the base and it isn't even lukewarm, it is
room temp but not warm or hot AT ALL. I am gonna borrow my dads heat gun
(don't know the actual name of it) it uses a laser to determine how hot iit
is and then run the thing at ull load and see what temp the base gets too.
Anyway any ideas on what could "possible" be causing this? Oh and one last
thing, this temp occurs even with the side off and a fan blowing in on it.
The temps drop 1-2 degrees C but that is it.

TIA
-Chris

 

[John]

Hey guys I have a problem and I am not sure where to post this. I have just
built myself a new sys, and according to motherboard monitor it is
overheating.
at Idle I get temps of about 50 C and at full load I got it upto 70 C! Here
are the specs
Abit IC7-G
P4 2.8E (Prescott)
1 GB OCZ System ram Dual Channel Pc3200
1 Barracuda Sata Raptor 120 GB
Alpha Pal S-PAL8952T

Now the thing is that I think "MAYBE" the sensor diode is bad or something,
because even those these temps are close to what is reported in the BIOS, I
put my hand on the heatsink at the base and it isn't even lukewarm, it is
room temp but not warm or hot AT ALL. I am gonna borrow my dads heat gun
(don't know the actual name of it) it uses a laser to determine how hot iit
is and then run the thing at ull load and see what temp the base gets too.
Anyway any ideas on what could "possible" be causing this? Oh and one last
thing, this temp occurs even with the side off and a fan blowing in on it.
The temps drop 1-2 degrees C but that is it.

TIA
-Chris

Actually Ive seen several people who claim they are getting temps in
that range. However Ive seen many others who claim they are getting
much lower temps in the 30-40 range after putting a decent
heatsink/fan on it which you have so you might want to reseat the fan
or look into air flow in the case since you are using a Raptor which
also supposedly puts out a lot of heat though you say the case side
off and fan dont change it that much.


http://www.legitreviews.com/reviews/prescotttemp/2.html

sammy2066
well my 2.4a prescott @ 3.24Ghz default voltage idles @ around
48-50degrees .......... and under load its a bit below 60degrees ....

I've been searching to see what the normal or acceptable idle and max
temperatures for a P4 2.8E cpu with the stock fan. Does anybody know
what they are? Mine is running at around 50 degrees celsius idle. Is
that too hot?

 

[WebWalker]

Recently I build a Pentium 3.0 E system with Abit IS7-E2 motherboard.
In the early stage, I check the CPU temperature which run around 64C.

I need to flash the motherboard's bios to overcome some problem. I
rechecking the CPU temperature, its drop to 48C.

I can't explain it, just go figure.

 

[Spajky]

at Idle I get temps of about 50 C and at full load I got it upto 70 C!
Abit IC7-G
P4 2.8E (Prescott)

it could be
quite normal reading from onDie Cpu diode with PrescHOT ...

Now the thing is that I think "MAYBE" the sensor diode is bad or something,
because even those these temps are close to what is reported in the BIOS, I
put my hand on the heatsink at the base and it isn't even lukewarm, it is
room temp but not warm or hot AT ALL.

maybe HS badly seated (w/o th.paste too?) or badly calibrated temps in
Bios ...

 

[YanquiDawg]

Had to do the same with my A64 and Chaintech NF3 motherboard. Before flashing
CPU temp was 16 C. Now,it's in the mid-40's. But now my DDR 400 reads as 333
memory even though it's set to 400. Go Figure.

 

[DaveW]

The "problem" is that you are using one of the new Prescott CPU's from
Intel, which Intel admits run at the temperatures you have quoted. Except
for running massive cooling in your case you're kind of stuck. That's one
reason that Intel is still selling so many Northwood CPU's.

 

[Bronney Hui]

Now the thing is that I think "MAYBE" the sensor diode is bad or

something,

It could be that the diode's bad...

because even those these temps are close to what is reported in the BIOS, I
put my hand on the heatsink at the base and it isn't even lukewarm, it is
room temp but not warm or hot AT ALL.

But what's worst and I suspect this is what's happening to you is that the
reason why the sink is lukewarm is cuz you didn't seat it right. Since it's
not touching the chip right, it's not transferring heat and hence, lukewarm
while your chip's getting toasty!

Reseat it asap!!

 

[Chris Stolworthy]

Hey guys I have a problem and I am not sure where to post this. I have
just built myself a new sys, and according to motherboard monitor it is
overheating.
at Idle I get temps of about 50 C and at full load I got it upto 70 C!
Here are the specs
Abit IC7-G
P4 2.8E (Prescott)
1 GB OCZ System ram Dual Channel Pc3200
1 Barracuda Sata Raptor 120 GB
Alpha Pal S-PAL8952T

Now the thing is that I think "MAYBE" the sensor diode is bad or
something, because even those these temps are close to what is reported in
the BIOS, I put my hand on the heatsink at the base and it isn't even
lukewarm, it is room temp but not warm or hot AT ALL. I am gonna borrow
my dads heat gun (don't know the actual name of it) it uses a laser to
determine how hot iit is and then run the thing at ull load and see what
temp the base gets too. Anyway any ideas on what could "possible" be
causing this? Oh and one last thing, this temp occurs even with the side
off and a fan blowing in on it. The temps drop 1-2 degrees C but that is
it.

TIA
-Chris

OK I reseated the heatsink, and...same thing. Same temps, etc. Also I am
not sure if you are aware of the Alpha Pal mounting system, but you actually
have to remove the retention bracket from the motherboard and thread screws
through the mounting holes. Then it uses compression screws to make sure
you have a tight fit to the processor base. But just to be sure I tried a
diff heatsink which USES the retention bracket andI was still getting temps
that were in the same range.

 

[kony]

OK I reseated the heatsink, and...same thing. Same temps, etc. Also I am
not sure if you are aware of the Alpha Pal mounting system, but you actually
have to remove the retention bracket from the motherboard and thread screws
through the mounting holes. Then it uses compression screws to make sure
you have a tight fit to the processor base. But just to be sure I tried a
diff heatsink which USES the retention bracket andI was still getting temps
that were in the same range.

Check bios to see if the CPU vcore voltage is correct per
your CPU.

Assess case airflow.

Update the motherboard bios if/when possible, it may simply
be an inaccuate (bios bug) reading.

Even so, if you have no signs of instability you're worrying
for nothing... except that if poor case airflow is the
problem you might have other parts overheating.

Also keep in mind that some boards have a fan control
circuit that lowers fan RPM to reduce noise. If that board
does it would easily explain the idle temp but the 70C full
load temp is still unexpected, AFAIK any board would still
increase fan RPM by the time it approached 70C, if not 60C
or lower.

 

[John]

Update the motherboard bios if/when possible, it may simply
be an inaccuate (bios bug) reading.

Ive read a post that claims Abits tend to have higher temp readings.
Didnt notice it in my abit boards in the past and he didnt specify
which models etc but it was in regards to the same type of Prescott
processor temp problem.

Even so, if you have no signs of instability you're worrying
for nothing... except that if poor case airflow is the
problem you might have other parts overheating.

Also keep in mind that some boards have a fan control
circuit that lowers fan RPM to reduce noise. If that board
does it would easily explain the idle temp but the 70C full
load temp is still unexpected, AFAIK any board would still
increase fan RPM by the time it approached 70C, if not 60C
or lower.

Ive also had my temps lower after a few days on several systems like
the thermal paste/pad was breaking in or something though Ive never
heard of this phenom posted so it might be something else. And frankly
there are lots posts of people with prescotts in that temp range,
though many others have said they got it down to the high 30s and 40s.

 

[kony]

Ive also had my temps lower after a few days on several systems like
the thermal paste/pad was breaking in or something though Ive never
heard of this phenom posted so it might be something else.

Yes, I and others have noted improvements over the first few
days and/or thermal cycles. It seems to be even more
signficant with very flat 'sinks than those more rough. I
usually expect 2-3C with average viscosity compound, perhaps
a little less with thinner compound or a little more with
waxy TIM.