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... ?

Thats lower than mine! 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  

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: Serious

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.

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: Mongoose

Quote from: Serious

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.

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