normal for case to be hotter than CPU?

cmdrdredd

Lifer
Dec 12, 2001
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according to asus probe my the case is hotter than my CPU. Can this be possible?
 

kaZ8Teen

Golden Member
Apr 27, 2003
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umm..my temps are usually 10 degrees lower than my cpu. but when i had my old case, my temps were even. i dont see why it cant happen
 

Alphanos

Member
May 27, 2003
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If your case & CPU temps are equal, I'd guess there's a problem with the temp probe (although I can't say which one). Since the temperature measured being produced by the CPU is a function of the processor characteristics and the ambient temperatures, its virtually impossible for the CPU & case temps to be the same. It'd be like having a CPU that makes no heat!
 

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
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I think you both missed what I said...case HOTTER THAN CPU

not lower not the same but HOTTER

can this be possible or is it reading my Case as CPU?
 

CoBRaXT

Golden Member
Mar 11, 2002
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i think your probe might have the temps switched around
(cpu is always higher than case unless you have a peltier, etc)
 

NYHoustonman

Platinum Member
Dec 8, 2002
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Use a different hardware monitor program or check the temperatures in your BIOS and tell me what they say.
 

Bookie

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Jun 25, 2001
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yes this is possible. You could have a heatsink/fan that is very efficient in disappating heat from the cpu but without proper airflow in the case that heat just fills up the case.

Get some airflow, because your case temps have to be too high if they are even close to your cpu temp.
 

beatle

Diamond Member
Apr 2, 2001
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It's not possible - you can't cool something below ambient temperature without a peltier or refrigeration.

What do temps in bios look like? I'm guessing the temps are switched.
 

huesmann

Diamond Member
Dec 7, 1999
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Originally posted by: Bookie
yes this is possible. You could have a heatsink/fan that is very efficient in disappating heat from the cpu but without proper airflow in the case that heat just fills up the case.

Get some airflow, because your case temps have to be too high if they are even close to your cpu temp.
I think you need to take some physics classes.
 

x3m

Member
Aug 17, 2002
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Are you reading temps in MBM or something like that?

Then I guess you mixed up the sensors.
 

Bookie

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Jun 25, 2001
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no, guys it's possible. Your case won't have the same exact temp across the entire area. It's dependent on where the case temp is measured in regards to the cpu. If the temp is measured right where the air is being dissapated from the cpu then the air is much hotter there. It doesn't mean your entire case is that temp.
 

amcdonald

Diamond Member
Feb 4, 2003
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Where the case temp is measured does have a great bearing on the reported case temp.
Its possible I guess. At bootup sometimes I'll see the temps out of normal balance, but its before the cpu has warmed up.
 

WarCon

Diamond Member
Feb 27, 2001
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If the "Case" sensor is actually measuring the air temp in the case, then without a water cooler (in a case with very poor circulation, but has the radiator cooling from outside air), a peltier or a phase-vapor cooling solution then it is impossible.

If the "Case" sensor is measuring the heat coming off the northbridge or some other place with poor circulation, then its possible, but shame on the mobo manufacturers for such lousy placement of sensors.

Edit: Its also possible that the "CPU" sensor is such a poor implementation that it reads 35C, when its really 65C(or higher). I have very little faith in sensor accuracy even though the mobo manufacturers have access to on-die thermistors and have a simple formula/circuit design (at least from Intel) that will cancel most inaccuracies in their measuring schemes, but they choose not to implement them for whatever reason. I am guessing the real reason has more to do with consumer panic over high temperatures in the more accurate boards and blaming the board for the higher temps (when in reality they have the exact same power dissipation in a different board). I personally would just like simple accuracy, so that I can judge changes in MY system. Then when I ask what my temperature is suppose to be, I will get a more correct answer.
 

huesmann

Diamond Member
Dec 7, 1999
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Originally posted by: Bookie
no, guys it's possible. Your case won't have the same exact temp across the entire area. It's dependent on where the case temp is measured in regards to the cpu. If the temp is measured right where the air is being dissapated from the cpu then the air is much hotter there. It doesn't mean your entire case is that temp.
No, it's not possible for the case temp to be higher than the CPU temp you moron. How do you expect the receiver of heat to be higher temp than the source of the heat?
 

soja

Senior member
Jul 30, 2001
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Originally posted by: huesmann
Originally posted by: Bookie
no, guys it's possible. Your case won't have the same exact temp across the entire area. It's dependent on where the case temp is measured in regards to the cpu. If the temp is measured right where the air is being dissapated from the cpu then the air is much hotter there. It doesn't mean your entire case is that temp.
No, it's not possible for the case temp to be higher than the CPU temp you moron. How do you expect the receiver of heat to be higher temp than the source of the heat?

huesmann KO's Bookie in the 15th post. The crowd goes ahhhhhhhh.
 

eflat

Platinum Member
Feb 27, 2000
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duh last time i checked there are other sources of heat in a case other than the cpu
 

sodcha0s

Golden Member
Jan 7, 2001
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Well folks, I have the same situation. The cpu temp always reads cooler than the case, or mobo temp. Do I believe it? No, but that's what asus probe, motherboard monitor AND the BIOS all say. In fact as I write this, mobo monitor is reporting a 29c diode temp, 32c cpu temp and 32c case temp. (yes, I have the sensors set up correctly) I'm running an A7N8X w/1700+ o/c'd to 2.2gig, and everything is reporting these crazy low temps. It sucks because I want to know what the real temps are...

BTW I'm using an SLK800 hs with a ys-tech variable speed fan.
 

hmsrolst

Diamond Member
Mar 18, 2001
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I think that it's important to remember that probes don't actually measure the case temperature, but just a particular point on the mobo. I've noticed that with HSF's in which the fan blows down on the mobo, e.g., an SLK800, you can often get high "case temps." I assume that the sensor happens to be located close to the CPU and the warmer air from the HSF is being blown directly onto it. (On an Intel CPU isn't the "CPU" temp is just one part of the CPU, so it's not obvious to me that the HSF couldn't get warmer than the "CPU.") I must say that I've never had a case where the "case" temp was higher than the CPU temp, but I've sometimes seen a very large swing, based on the direction that the fan is blowing.
 

mindwreck

Golden Member
May 25, 2003
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Originally posted by: huesmann
Originally posted by: Bookie
yes this is possible. You could have a heatsink/fan that is very efficient in disappating heat from the cpu but without proper airflow in the case that heat just fills up the case.

Get some airflow, because your case temps have to be too high if they are even close to your cpu temp.
I think you need to take some physics classes.

i 2nd that.
 

huesmann

Diamond Member
Dec 7, 1999
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Originally posted by: CitizenDoug
duh last time i checked there are other sources of heat in a case other than the cpu
How many of them are hotter than the CPU?
 

SWScorch

Diamond Member
May 13, 2001
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Well, imagine this: perhaps the case temp sensor is in a section of the case that is stagnant and very warm, but the CPU is getting fresh outside air from somewhere. That could explain the seemingly impossible situation.
 

Mingon

Diamond Member
Apr 2, 2000
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No, it's not possible for the case temp to be higher than the CPU temp you moron. How do you expect the receiver of heat to be higher temp than the source of the heat?

My shuttle sn41g2 quite often has a warmer cpu than ambient case temps, If you have a fan blowing directly from the outside either by a duct or near as direct and the cpu sucking down it is quite easy to get warmer case temps - to call someone a moron is like pointing the finger
 

huesmann

Diamond Member
Dec 7, 1999
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Originally posted by: Mingon
No, it's not possible for the case temp to be higher than the CPU temp you moron. How do you expect the receiver of heat to be higher temp than the source of the heat?

My shuttle sn41g2 quite often has a warmer cpu than ambient case temps, If you have a fan blowing directly from the outside either by a duct or near as direct and the cpu sucking down it is quite easy to get warmer case temps - to call someone a moron is like pointing the finger
So...where does what you state above (bolded for clarity) disagree with what I said? Your CPU is warmer than your case. How exactly do you get a warmer case than CPU?
 

huesmann

Diamond Member
Dec 7, 1999
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Originally posted by: SWScorch
Well, imagine this: perhaps the case temp sensor is in a section of the case that is stagnant and very warm, but the CPU is getting fresh outside air from somewhere. That could explain the seemingly impossible situation.
In which case you have an impossible measurement, not a thermodynamic impossibility.