Finished putting my new PC together last Tuesday all went fine the only thing thats annoying me at the moment is my system temps its at 35-36 idle and 37-38 under load.
Iââ,¬â,,¢m not sure why, my cpu is around 26-27 idle and only 28-30 under full load I have two intake and two exhaust fans for cooling my other hardware like HDD and GFX card are all fine temperature wise its just the system temperature thats a little high and I donââ,¬â,,¢t know why?
Any ideas maybe the thermometer is in a hot spot ? maybe it the PSU? As it as a bottom fan well afaik I know it was a bottom fan.
Iââ,¬â,,¢m a bit stumped atm.
P.S Im using SpeedFan to get these temps.
One thing the AUX temp reading on SpeedFan is that your PSU temp or Northbridge temp? as it reading 33-34 atm.
all air cooled right ?
speed fan is muderling them up, theres an option there to sort it out somewhere....
I think the (idle temps) 35-36 one is the CPU, and the 26-27 one will be the air temp inside the case !
(good looking temps there too)
you can always disconnect the CPU fan power for a moment and see which temp rises? (just for a moment, and the fan only not the heatsink as a mate of mine once did!)
Yeh air cooled
Just checked the BIOS and speed fan seems to be reporting the CPU temp right where as the AUX temp on speedfan is the same as the system temp in the BIOS.
aint used speed fan in years.... (watercooled now, really liked it when I did use it)
but you should be able to set it so it gets them right... ?
8)
Thats lower than mine! :D lol.
go on the info tab and click get config,
try a few off the speedfan site and youll find one looks right.
itll save you setting it up :D
p.s. yeah noice temps, what CPU / heatsink are you using there ?
A Freezer 64 Pro its a big bugger but seems to be doing the job well.
I know these temps are nothing to worry about but I just felt the system temp was little high seeing as all the other temps like HDD, GFX and CPU were all low.
BIOS reads (idle)
26-27 - CPU
34 - System (Same as AUX on speedfan)
overall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
Quote from: Mongooseoverall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
A liquid nitrogen cooled CPU certainly can be colder than the system temp sensor, although thats being a little bit OTT for normal usage.
A heat pump moves heat from cold to hot otherwise freezers and refrigerators wouldnt work. OK, I might be being a little picky on that one.
Quote from: SeriousQuote from: Mongooseoverall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
A liquid nitrogen cooled CPU certainly can be colder than the system temp sensor, although thats being a little bit OTT for normal usage.
A heat pump moves heat from cold to hot otherwise freezers and refrigerators wouldnt work. OK, I might be being a little picky on that one.
OK I should have said heat doesnt transfer on its own from cold to hot. Hes using standard air cooling, so I didnt feel it was necessary.
Quote from: Mongooseoverall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
Speedfan Reads:
System: 36c
CPU: 26c
Aux: 34c
BIOS:
System 34c
CPU 26c
CPU core temp using a separate programme is 24c
Mobo is a MSI K9N Diamond and uses the same Winbond chip for CPU,AUX & System temps according to Speedfan.
Any ideas, tests, solutions etc?
[EDIT] Just flashed the BIOS to the latest version in the of chance that would maybe sort things out, it didnââ,¬â,,¢t so Iââ,¬â,,¢m back to square one.
The only thing I can think is that maybe itââ,¬â,,¢s the PSU? I have a Antec Truepower Trio 550w job and as far I am aware the fan is supposed to be pointing downwards, maybe the fan is blowing hot air in the case and should be pointing the other way?
[EDIT] Though having said that I just checked it and itââ,¬â,,¢s defiantly sucking air up and not blowing air down.
Which leaves me to think the sensor readings are backwards with the 34/36c being cpu and 26/27v being the system temp which does sound more normal
Smugs, I hope you enjoyed the blonde moment with the fan direction :)
Quote from: MongooseQuote from: SeriousQuote from: Mongooseoverall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
A liquid nitrogen cooled CPU certainly can be colder than the system temp sensor, although thats being a little bit OTT for normal usage.
A heat pump moves heat from cold to hot otherwise freezers and refrigerators wouldnt work. OK, I might be being a little picky on that one.
OK I should have said heat doesnt transfer on its own from cold to hot. Hes using standard air cooling, so I didnt feel it was necessary.
As I said, I was being picky ;)
Quote from: SeriousSmugs, I hope you enjoyed the blonde moment with the fan direction :)
Not following you?,sorry its been one of those day lol.
Quote from: SeriousSmugs, I hope you enjoyed the blonde moment with the fan direction :)
Quote from: MongooseQuote from: SeriousQuote from: Mongooseoverall system air temp cant be higher than CPU temp (Thermodynamics, heat doesnt flow from cold to hot) so either the system temp sensor is in a hotspot or something somewhere isnt working right.
A liquid nitrogen cooled CPU certainly can be colder than the system temp sensor, although thats being a little bit OTT for normal usage.
A heat pump moves heat from cold to hot otherwise freezers and refrigerators wouldnt work. OK, I might be being a little picky on that one.
OK I should have said heat doesnt transfer on its own from cold to hot. Hes using standard air cooling, so I didnt feel it was necessary.
As I said, I was being picky ;)
I know, I would expect nothing less from you mate ;) tbh as I typed it a little voice in the back of my mind was listing the ways in which what I was saying was strictly speaking wrong and going "noooo Serious will pick us up on it!!". One day Ill learn to listen to that little voice.
smugs have you got say a medical thermometer, or a fish tank one or something that you could sit inside your case for a while and get a second opinion on the air temp in there?
Alternatively try having the side off and blowing room temp air in with a fan, the system temp should then drop to room temperature.
It really does sound as if its reading backwards, 26 system 34 CPU would be a much more normal fairly good aircooled reading.
Quote from: SmugsQuote from: SeriousSmugs, I hope you enjoyed the blonde moment with the fan direction :)
Not following you?,sorry its been one of those day lol.
It sounded like you were saying the way the PSU was installed (fan up or down) affected whether it blew air into the system or sucked it out. Obviously, unless they put the fan in the wrong way around, its going to suck air out no matter which way up the PSU is in the case.
Quote from: SeriousQuote from: SmugsQuote from: SeriousSmugs, I hope you enjoyed the blonde moment with the fan direction :)
Not following you?,sorry its been one of those day lol.
It sounded like you were saying the way the PSU was installed (fan up or down) affected whether it blew air into the system or sucked it out. Obviously, unless they put the fan in the wrong way around, its going to suck air out no matter which way up the PSU is in the case.
lol damn see told you it was one of those days.
I found my self a fridge thermometer (not ideal but the best I could find) and sat it on top of the floppy drive just above half way up in my system and out of the way of direct airflows so to get the most accurate reading.
I left it for about 15 minutes and it recorded a temperature of about 21c
But you can tell even with the out the thermometer that it doesnââ,¬â,,¢t feel like 35c in side the case.
if the air temp in there is 21 then its possible that the CPU really is 26, though that would be one hell of a HSF.
But I still think the most likely possibility is that the readouts are the wrong way round.
How about loading up the CPU and seeing which number moves first (should be CPU)?
Its not a very good thermometer and is designed to read fridge temperatures so id imagine the temp to be a few degrees higher but not in the 35c range Iââ,¬â,,¢m being told by the BIOS or Speedfan.
Using Stress Prime 2004 the first temp to move up is the CPU read out on speed fan, another thing ill add is that using a separate little programme called Core Temp its reads the core as 23-25c.
HSF is a Freezer64 Pro huge thing with a 90mm fan.
:?
Few things of note my room isnt very warm the system is pretty tidy with lots of room around things like the HSF, RAM and GFX card.
Still that may explain the low CPU temp but not the high system temp?
A friend of mine thinks it could be reading from the Northbridge and not the Ambient air temperature as thought?
[EDIT] Scratch that some people on the MSI forums dont think it is.
sounds like your CPU really is at ~26 then which is a call for celebration by any standards, my chips dont often run that cool and Im watercooled.
My guess is that wherever the system temp sensor is must be a hot spot, perhaps it is close to the NB or GFX card, or maybe hiden in between some expansion cards where the airflow is a bit pants.
I wouldnt worry too much about it, its not like either is anything close to a danger area for any component in your PC.
True its never gone over 38c (system) and thatââ,¬â,,¢s after 3 hours of BF2 and from the tests Iââ,¬â,,¢ve done its not the real ambient temp of the case so I should think its in a hot spot like you said.
bit late asking now but which cpu have you got?
If its a dual core 6300 with a really big heatsink on then it just might be telling the truth :/ System temp might be getting affected by a heatpipe cooled Northbridge chip. (Please note Im probably out of it and grasping for straws here ;) )
CPU is a single core Athlon 64 3800+
The Northbridge does have a heat pipe on with a small fan on the NB heatsink.
(http://www.msi-computer.co.jp/product/mb/large_photo/K9NDiamond.jpg)