Do temps tend to go up over time or is it the warm weather causing high temps?

[mookydooky]

As in the subject line. I've noticed that that temps on some of my rigs have gone up by a few degrees lately. I was wondering whether this is attributable to spring weather or some kind of weakening of the contact between the CPU and the HSF over time. Curious as to whether other people's CPU temps have also been rising lately with the spring weather.

[akaBruno]

The weather is definitely a factor. That includes temperature and humidity.

A lot of overclockers back off a bit in the good old summertime.

BRUNO

[SteveI]

Ditto... I've noticed my main rig went up about 5c in the last couple of rigs. I'm still under 50c so, no worries yet.

[mookydooky]

Thanks people. I guess it's a good thing I asked before taking apart a machine for nothing.

[Daniel ~]

Originally posted by mookydooky
Thanks people. I guess it's a good thing I asked before taking apart a machine for nothing.

I usually have to lessen my overclocks during the summer even in Seattle.

haha i like my room warm so...

it rarely gets much warmer in the summertime than i keep it in the winter

cold blooded, me




i have also come up with a solution to this extreme summer heat problem entirely.

so you O/C your machine and border it on stability and all,
then you find you must do work or a school project etc...
bad time to find a glitch!

i am gonna keep my XP1600+ mildly stock just a little FSB push...
for everyday use and things of important nature....

while i put my GF2MX, Duron 800, and Tonicom PC166 onto a KK266 mobo SOLELY for the purpose of tearing it up!
it'll also serve for burning discs, video encoding, storage and stuff, so i don't have to tie up my main box with that junk for hours on end.

and when it's too hot out, i don't need to rely on this comp for stability or extended usage.

i think it's a good idea to have a box which lets you explore the joys of O/C'ing without the fear of expensive parts replacement.

[dimmreaper]

You probably just need to take your heatsink out and clean the dust off of it . . . .

[LutaWicasa]

All of the above and, depending on your asual temps, I have after an extended period of time had to clean and reapply goop.

[cloasters]

Summer time has an extra cute feature for fastidious PC owners. There's an ambient temperature point that once exceeded, makes box and processor temps rise in a non-linear manner. After this "knee" is exceeded, the temperatures of case and processor are again linear with the ambient, or room temperature. HOWEVER, the case's interior picked up a lovely jump in temperature of say 4C "out of nowhere."

For the sake of argument, let's say that this "Magic ambient temperature value" is 73 degrees F/23 degrees C. At 22C, the case's interior is 5C hotter than room temperature. Presto, chango, at 23C room temperature, it's 9C hotter inside the case than the ambient air temperature. This new relationship of case interior temp to room temp is now "normal." The new linear relationship holds true as the room and case temps keep on rising. AFAIK. Maybe there is another "knee" at higher temperature. I kinda don't want to find out!

I assume that simple heat saturation impedes the ability of the case to transfer heat to the outside. Perhaps this delightful bonus of 4C can be put down to entropy.

Anyone else notice this?

[mookydooky]

Originally posted by cloasters
Summer time has an extra cute feature for fastidious PC owners. There's an ambient temperature point that once exceeded, makes box and processor temps rise in a non-linear manner. After this "knee" is exceeded, the temperatures of case and processor are again linear with the ambient, or room temperature. HOWEVER, the case's interior picked up a lovely jump in temperature of say 4C "out of nowhere."

For the sake of argument, let's say that this "Magic ambient temperature value" is 73 degrees F/23 degrees C. At 22C, the case's interior is 5C hotter than room temperature. Presto, chango, at 23C room temperature, it's 9C hotter inside the case than the ambient air temperature. This new relationship of case interior temp to room temp is now "normal." The new linear relationship holds true as the room and case temps keep on rising. AFAIK. Maybe there is another "knee" at higher temperature. I kinda don't want to find out!

I assume that simple heat saturation impedes the ability of the case to transfer heat to the outside. Perhaps this delightful bonus of 4C can be put down to entropy.

Anyone else notice this?

Entropy. I like entropy. Gives me a warm feeling all over.

[kat]

good old summer time ....or not... hard on carpenters and computers.


weather forcast in MI

low 60s

time to start unclocking

[dimmreaper]

Originally posted by cloasters
There's an ambient temperature point that once exceeded, makes box and processor temps rise in a non-linear manner.

If your chassis temperature and CPU temperature are increasing in a non-linear fashion, I suggest you check your testing equipment for accuracy. On-board health monitoring information is sometime "curved" intentionally, and as such is totally non-reliable.

[cloasters]

Originally posted by dimmreaper
If your chassis temperature and CPU temperature are increasing in a non-linear fashion, I suggest you check your testing equipment for accuracy. On-board health monitoring information is sometime "curved" intentionally, and as such is totally non-reliable.

Very true, Jeff. I'll be a happy puppy when mainboard manufacturer's products accurately measure the internal temperature reported by AMD Morgan cored Durons and Athlon XP's. And hurry up about it! I can't remember whether AMD or the mobo maker's fumbled this. Whichever, make it work!!

I wrote that the ambient and case temperatures remain linear, it's just that ~4C is added to the case temp at a certain point. After the "bonus 4C" is present, the outside and case temperature relationship does remain linear.

As I don't plan to OC any AMD processors, I'm not very concerned that the reported temps from the mainboard's sensors are not worth a hoot for accuracy, as you wrote. Careful installation of HSF's that are powerful enough for "medium" overclocking on processors running at "stock" seems a wise thing to do. So I do it. This plus 100 cfm through the case assuages any concern that I'm burning up a CPU--but don't know it because the reported temps are lies.

And I also remove the mainboard from the case to install new HSF's. Because I can not eyeball the CPU/HSF junction without doing so. This has been known to delay the installation of new HSF's. Kinda.

[Holst]

Originally posted by dimmreaper
If your chassis temperature and CPU temperature are increasing in a non-linear fashion, I suggest you check your testing equipment for accuracy. On-board health monitoring information is sometime "curved" intentionally, and as such is totally non-reliable.

Another similar point.

On my 8kha+ the case temperature sensor is at the botton of the board under the PCI cards.

I used to have a Soundblaster live and my temperature was about 20*c.

I then changed to a SB 5.1 and my temperature jumped to 23*c
Just because the 5.1 chip gets damned hot.

If I play winamp for 15min my "case" temperature increases to 25*c.

My CPU temp is virtually unchanged.

Another example of totaly innacurate temperature measurment.
Well not so much innacurate, just un scientific.

Maybee I should put a HSF on my soundcard ... Hmmm.

[robbie]

Originally Posted by dimmreaper

You probably just need to take your heatsink out and clean the dust off of it . . . .

That's what I was going to say. After about 3-4 months my HSF get pretty dusty.
Rob

[timbob2469]

Originally Posted by robbie

That's what I was going to say. After about 3-4 months my HSF get pretty dusty.
Rob

I've had that happen, when the fans get dusty they run slower, and not only the fans but the vent holes start to get "fuzzed". I could tell you horror stories of pc's I've been asked to look at because of restarts and lock-ups, The worst I've heard about was because it was kept on a thick carpet compounded by the family cat that liked to sleep next to it's warm,purring, surrogate mama. My buddy said he pulled out enough fur to make a kitten.
Bob

[purplemohawkman]

ok we know how much the ambient temp plays a role, how about humidity???? but even w/ my h20 cooling i get a fairly good changes in temp. im runnin a v1.95 so that right there will heat up a chip nicely but i get temps from mid-low 50's which is were im sittin right now to low 40s so 10 degrees C is quit a big change. and the whole dust thing is just rediculuse w/ my radiator, i got dual 120's each pullin about 84cfm its like a magnet. so i find my self blowin my rad. about once a week