Temps + Fans

[kosova]

what are/is good temp range..my case LED (mounted on a expansion, place for CD/DVD's) is saying 72F..my Bios was saying 75F (CPU)..am i alrite? my Celcius to Fahrenhite have completely lost me lol. Also how would i know if i could add another fan, or is there for me to "look"?

[Cricket]

Are you sure the temps are in fahrenheit and not celsius? 75 F is pretty low...unless your ambient room temps are in the 50s.

If the temps are in fahrenheit it's running really cool.

But if the temps are in celsius they are dangerously high.

Cricket

[Stuey]

I think you should double check everything. Are you certain this is your CPU temp and not your system temp? Where did you place the sensor that is attached to the add-on temp monitoring device?

[rspassey]

Room temps are around 71 or so 75 is a very good CPU temp.

[kosova]

Originally Posted by ryan124712 Room temps are around 71 or so 75 is a very good CPU temp.

my home temp are around that..when i touch my case...COld. I thought 73F was normal not cold (EITHER WAY..SWEET)..i put the sensor on the rack that i can put a CD/DVD. SOme suggested it should be near the cpu, but i wont put it near there till i get something solid to hold it with. Yea i thought it was cool i was just making sure. BTW this comp is so freaking quiet, is it possible for my fans to be running at 5k RPm and i think the 80mm at 3k RPM? i thought that the 120mm running at 5k was abnormal, ive never seen such a high RPM

[Cricket]

75 F is only 24 C...that's real cool for a CPU.

71 F is only 22 C...that's real cool for case interior temps.

Typical CPU temps (depending on which CPU you're using and ambient temperatures) can be anywhere from 30 C to 50 C at idle.

Cricket

[kosova]

Originally Posted by Cricket 75 F is only 24 C...that's real cool for a CPU. 71 F is only 22 C...that's real cool for case interior temps. Typical CPU temps (depending on which CPU you're using and ambient temperatures) can be anywhere from 30 C to 50 C at idle. Cricket

well cricket, it is snowing a BLIZZARd in the midwest (where i am), and i am sorta freezing inside, my thermometer is sorta broken it cant keep a steady temp. |It either goes way too hot or way too cold, right now way to cold (65-70C). I'm running a Sempron 64 3400 2.1 ghz 256k L2 cache, if i keep my temps low does that mean that the cpu life-span will last longer? BTw im not planning on OC'in anytime soon.

[Cricket]

Originally Posted by kosova I'm running a Sempron 64 3400 2.1 ghz 256k L2 cache, if i keep my temps low does that mean that the cpu life-span will last longer?

Yes, it will...but CPU lifespan can be measured in decades (if you're running it at stock speeds) and by the time that CPU is ready for the graveyard you'll have upgraded or built several new computers anyway.

Don't worry about CPU lifespan...the only thing to worry about is when you're overclocking and feeding it too much vcore voltage...that could fry the CPU and kill it.

Cricket

[kosova]

Originally Posted by Cricket Yes, it will...but CPU lifespan can be measured in decades (if you're running it at stock speeds) and by the time that CPU is ready for the graveyard you'll have upgraded or built several new computers anyway. Don't worry about CPU lifespan...the only thing to worry about is when you're overclocking and feeding it too much vcore voltage...that could fry the CPU and kill it. Cricket

im curious, cuzz i think i've heard someone say that their CPU temp was so low it locked up and i didnt know if COLD=GOOD, or COLD=Bad. ANyways for the oc, i will try that sometimes next year in spring/summer..but i am not going to mess with voltage cores. It seems to messy.

[Stuey]

For some reason, I highly skeptical about the accuracy of your temp. sensor. I think it's highly unlikely to reach a temp of 25C without extraordinary measures although I'm probably wrong?

Also, yes, as CPUs have a higher limit operating temperature, they have lower limit operating temperatures as well. Although, there is no way that a typical user can ever reach those lower limits unless they leave their laptop outside overnight in the middle of winter.

Also, you're going to want to be VERY careful if you try to OC a Sempron because I imagine it's not designed with much flexibility in mind.

[kosova]

Originally Posted by Stuey83 For some reason, I highly skeptical about the accuracy of your temp. sensor. I think it's highly unlikely to reach a temp of 25C without extraordinary measures although I'm probably wrong? Also, yes, as CPUs have a higher limit operating temperature, they have lower limit operating temperatures as well. Although, there is no way that a typical user can ever reach those lower limits unless they leave their laptop outside overnight in the middle of winter. Also, you're going to want to be VERY careful if you try to OC a Sempron because I imagine it's not designed with much flexibility in mind.

he was experimenting with small refrigarator case. The idea, put the mobo in a small cubical refrigarator, try to never open the door or the mobo gets hot

[yeoamuca]

my temp for my athlon 64 is surprisingly related to my room temp
my system temp pretty much stays the same temp as my room (good circulation i guess)
if i open my window (winter in pittsburgh) my sytem and cpu temp drop like a rock
right now my cpu runs at around 28c and my system is around 21c

last night i had athlon 1200 that i just got that was running around 60c cpu temp
my other 1200 runs around 44c with non stock cooling
i put the case next to my window and now the 60 is running at 34c

lower temperature is much better for electronic equipment
ie superconducters work at very low temps
when temps get colder the atoms vibrate less and allow better electron flow

there isnt a floor to how cold they should go
(at least til the point that the processor would crack but you wouldnt be able to reach that unless you have liquid nitrogen or something)

but too hot isnt good

[Cricket]

Originally Posted by kosova he was experimenting with small refrigarator case. The idea, put the mobo in a small cubical refrigarator, try to never open the door or the mobo gets hot

What?!? You didn't say you had your computer in a refrigerator in your first post. Then of course the temps would be low. Or is this someone else's computer?

Cricket

[rspassey]

PC + fridge = BIG PROBLEM.

Definataly something I wouldn't try

[kosova]

Originally Posted by Cricket What?!? You didn't say you had your computer in a refrigerator in your first post. Then of course the temps would be low. Or is this someone else's computer? Cricket

no he did that, but ofcourse he has that it was dangerous and he stoped. My temps are up now that my home temp is 70ish..inside of the case now its 73F..and my cpu prolly at 78F..let me check, the ABIT EQ (program that came with the drivers) says my cpu temp is 28C and SYS 23.5C...ok those are under normal range (30-50C)

[LoC]

just so you know but at tom's hardware they use liquied nitrogen on a p4 and overclocked it to ~5.4GHz at something around -285C and ~-195C on the chipset. so yeah, CPUs can get COLD and work, which makes sense as stated by the example of superconductors. eseentially, the colder the better. if you can get near 0 degrees Kelvin, only one or two instances exist i believe, you could have a ridiculous processor.

[kosova]

Originally Posted by LoC just so you know but at tom's hardware they use liquied nitrogen on a p4 and overclocked it to ~5.4GHz at something around -285C and ~-195C on the chipset. so yeah, CPUs can get COLD and work, which makes sense as stated by the example of superconductors. eseentially, the colder the better. if you can get near 0 degrees Kelvin, only one or two instances exist i believe, you could have a ridiculous processor.

i read an article like that in tomshardware but i remember the OC being 4.2ghz, how much in C or F is 0K?

[Jaypeg]

I sit my computer under my desk right next to the baseboard, there is a small gap between the baseboard and the floor so it leads down into the basement. The basement is drafty and cold, so, naturally it is slightly cooler around my comp then the rest of the room. I run 3 fans, all fairly cheap and boring, however I leave the side of the case off. I have been steadily running temps of, cpu 27, sys1 28, sys2 30. Under load it's only slightly higher but I haven't been doing much lately. Plus I am running an old socket 423, p4 1.8.

[Owl]

I was just wondering the same thing about my temps?
Just upgraded to an ASUS P4P800SE Motherboard and re-used my old Pentium 4, 1.6 Ghz processor, also added a 120mm side case fan and was shocked when I ran ASUS Probe to check my CPU temp and it claimed 19C/66F, Mobo Temp was 23C/73F. I thought maybe the sensors were wrong? So I installed Speedfan & Everest and got the same results from both!
I might start using my 'puter for a beer cooler

[Stuey]

Originally Posted by yeoamuca lower temperature is much better for electronic equipment ie superconducters work at very low temps when temps get colder the atoms vibrate less and allow better electron flow there isnt a floor to how cold they should go (at least til the point that the processor would crack but you wouldnt be able to reach that unless you have liquid nitrogen or something) but too hot isnt good

I checked all over AMD's website but the documents they offer do not contain the complete thermal data for their chips. Intel, however does provides this data here in this pdf. On pages 75-76, it describes the operating temperature range and in table 5-1, they state that the lower limit temperature is 5°C.

Cold temperatures are NOT good for electronic equipment. Most retail mobile devices (most notably cell phones, digital cameras, mp3 players) have a temperature range listed in their manual which the player should not exceed.

In addition, only under very controlled conditions will a certain material exhibit superconducting properties, but only specific condcutors will behave as such.

Too cold is bad, too hot is bad. ALSO, ignoring the lower-temperature limit from a real-time electronic effect sense, going above or below the operating temperatures will physically, not electronically, destroy the constituent components of device. In other words, you'll have fractures, open circuits, short circuits, etc. etc.

Sorry, I just gave a long presentation and am still in "educate" mode.


Owl, I'm unde the impression that Speedfan just reads data from the hardware itself. Your BIOS and Speedfan should give you the same readout since they are both interpreting the same sensor signals. I might be wrong about this thoigh, so don't hold it against me if I am. You would need to install a second thermal sensor in order to verify the true temperatures, but I don't think unembedded thermal sensors can yield very precise readings.

[yeoamuca]

cold is only not good for electic devices like cell phones and cameras because it will crack the plastic and other parts holding in the electic parts
they give you that rating because of failure of other parts not designed to go lower
like i stated in my explanation before cold is better for a processor and most likely the reason intel has a lower range of 5degrees is to protect the processor from cracking

colder temperatures are most certainly better for electricity and electron transfer

[Stuey]

The packaging is more durable the the interior components themselves. I'm not arguing that the internal electronic resistance doesn't decrease or that the conductivity doesn't increase. I'm just saying that the components are microfabricated such that the behavior of the processor will also change. The semiconductors are highly sensitive to environmental changes and I believe operation anomolies and errors will occur before there is physical damage. BUT if the chip goes through heating cycles in a cold environment, the solder can fracture, and the minute contacts between all of the components can fracture or completely break as well.

If it gets too cold, the conductive transfers might contract to a point where the resistance increases. So although electronic resistance decreases, the cross sectional area of the "wire" will contract, and this will provide a resistance increase.

I don't think there would be a way for either of us to claim that a temperature of let's say 0°C is overall detrimental or advantageous to the operation of a processor, but there definitely are a lot of factors which would counter the benefits of increased conductivity. In other words, I think that the correct conclusion falls somewhere between both of our extreme statements (you say cold is overall good, I say it's overall bad).

[blue60007]

Right, the CPU can go much much colder and still work, but it can become fragile. People have used liquid nitrogen to cool their processors and temperatures at the point are in the range of -200C.

[Stuey]

Is the entire chip maintaining a temperature of -200°C, or is the heatspreader being cooled with a liq. N2 cooler? Also, for how long is a processor stable for after its ambient temperature starts to fall. Unless the CPU is completely submerged in liq. N2 and then operated from inside that environment, it cannot reach -200°C.

So was its cooler at -200 or was the CPU enveloped in a cooler or something?

[yeoamuca]

thats basically what i was saying
you can cool the processors down until the point that something on them fails physically
but most people cant really get to that point
so whatever someone here wants to do to cool them down if they get to 0c more power to them
i really dont see 0c being detrimental to a processor

[Stuey]

That's what I'm saying though, the processor's logic might fail to function properly. There will be anomolies and errors because all of the timings will be out of whack. With fluctuating strains from the heating and cooling, some of the transistors might fail or suffer from physical damage.

[yeoamuca]

but if done correctly there shouldnt be much heating and cooling the temperature should remain pretty constant

[Stuey]

For what duration can a chip last at that temperature before it crashes. In almost every account I read about, the time is extremely brief and irreproducible.