• Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
    Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.

Temps Seem Wrong on E8400

PhantmShado

Limp Gawd
Joined
Aug 17, 2009
Messages
355
I recently decided to turn my E8400 with Asus P5N-D setup into an overclocked one (my first overclock setup and I installed a new Zalman 9900 for the task), but first wanted to make sure I had an idea of what temps were. Another site said to gauge temps with case covers off first at idle (to see if the tcase temp was about 3 above ambient) and then at load where a difference of about 5 degrees was supposed to be seen between tjunction and tcase.

So I loaded up speedfan, but, the things is, the Core 0 and Core 1 temps just sat at around 38 and 35 respectively both when I let it sit at idle for 10 min, and then when I let it go to prime 95 small ffts for 10 min (with a margin of about 1 degree movement while switching to load). There was one temp that changed (labeled Temp1) when I did this between about 32 and 45 degrees. Nothing else really moved.

This seems wrong on the three counts that there should be, as far as I know, a temperature that the cores move in conjunction with, that the cores should get hotter when put under load, and that at idle the temp should be a lot closer to room temp (about 20 in my apartment).

I will note that before sticking in the Zalman 9900, while still on stock cooler, I did a test with realtemp (switched to speedfan as the other site recommended that) and the reported temps were about 41 per core on idle, 71 per core on load, but as far as I know, bad as stock cooler supposedly is, even that is too high (there was no appreciable amount of dust buildup inside the case). Also, both coolers are reporting about 40 at idle for the cores where I would imagine they'd be reporting closer to within 10 degrees of room temperature given how at least the Zalman's is clearly able to dispose of heat (reported 30 degree improvement at load, but then again, not really sure what is right).

Other info is all reported temps by speedfan:
GPU: 68C
Temp1: 33C
Temp2: 38C
Temp3: 22C
Core 0: 38C
Core 1: 35C

Realtemp just reports same values for Core 0 and Core 1.

Any pointers on whether it's normal for temps to be such or if there's some methodology I should be following to evaluate/correct the temperatures would be appreciated.
 
well first off id say the temps look about right.. second your idle temps are completely bogus.. no matter how much you wish it was running at 38C its probably not.. the idle temps have been wrong since day 1 of the C2D's.. only temp that matters is the full load temp.. and even then there is still a margin of error when its below 50C.. third.. id recommend realtemp over anything else when it comes to cpu temps on a intel processor.. speedfan is good for everything else though.. but realtemps more up to date when it comes to tjmax settings..

the temp1 sensor most likely is your cpu socket temp.. run large FFT's and then you will find which one is your northbridge temp.. and temp3 is most likely your system temp since its much closer to ambient..

also you will never get a cpu to run at ambient temp no matter how much you want it to.. it will always be around 5-10C above ambient on air cooling..
 
You may try CoreTemp. I've had better luck getting the CPU temp with Coretemp than any other program.
 
Many of the E8400s are also know to have broken/stuck temp sensors, so you may have gotten one like this. I am pretty sure one of mine never worked completely right. It is like they said, worry about only the load temps. Put a nice cooler on it and call it a day. :D
 
well first off id say the temps look about right.. second your idle temps are completely bogus.. no matter how much you wish it was running at 38C its probably not.. the idle temps have been wrong since day 1 of the C2D's.. only temp that matters is the full load temp.. and even then there is still a margin of error when its below 50C.. third.. id recommend realtemp over anything else when it comes to cpu temps on a intel processor.. speedfan is good for everything else though.. but realtemps more up to date when it comes to tjmax settings.

Wait, so it would actually probably be above 38C at idle? I don't know, maybe I'm getting confused by the wording, but that's kind of noticeably above a 5-10 increase over ambient. Also, are you saying just to trust the temps reported by realtemp once the cpu goes past 50 celcius and just ignore them before then?
 
Many of the E8400s are also know to have broken/stuck temp sensors, so you may have gotten one like this. I am pretty sure one of mine never worked completely right. It is like they said, worry about only the load temps. Put a nice cooler on it and call it a day. :D

QFT had the same problem with my E8400
 
Back
Top