Tom's Hardware > Forum > Overclocking > Cooler and Heatsinks > [Solved] What should I believe... CoreTemp or my BIOS???

[Solved] What should I believe... CoreTemp or my BIOS???

Forum Overclocking : Cooler and Heatsinks - [Solved] What should I believe... CoreTemp or my BIOS???

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Best answer from randomizer.

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redgarl   07-24-2009 at 05:07:02 AM

Recently I was having problems with my temps. I suspected too much AS5, but my temps are about 2C or 3C less only.

It is far from the temperatures I got in CoreTemp and my BIOS. I really suspect a false reading from my motherboard since my 3 cores got the exact same reading. It`s not the first time I got false reading from my BIOS HWmonitor, it was also the case with my MSI K8N Neo2 platinum.


My specs are :

Phenom II X3 720 BE (4th core enabled)
OCZ Vendetta 2 cooler
OCZ OCZ3P16004GK DDR3 @ 1600
Asus M4A78T-E
Asus 4850 TOP in crossfire
OCZ ModXstream 700 W
Coolermaster Cosmos S
Sony BDUX10S Blu-Ray
HT Omega Striker

Also, I plan to OC... so which temp I should trust... the one in CoreTemp, or my BIOS?.

http://i235.photobucket.com/albums/ee33/Redgarl/asusprobe.jpg

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Best answer from randomizer
I don't know a great deal about AMD sensors or thermals. But the DTS will read from the core so it's going to provide a reading closer to the actual temperature than an external sensor, provided it isn't prone to alot of error like the old Brisbane core's DTS.
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Bronze Overclocking badge overshocked   07-24-2009 at 06:07:05 AM

^ Temperature in windows is always more trusted.

but get realtemp.

Reply to overshocked
redgarl   07-24-2009 at 07:01:01 AM

overshocked wrote :

^^ whatever... then trust HWmonitor

Ah man, I just reinstalled my HS to get to the exact same point. I will wait a month to see if my Thermal paste is showing the same result. If no, I will need to reinstall my HS again...

I really think that my crossfire setup an my DDR3 OC really fool the cpu thermal sensor on my motherboard.


Reply to redgarl
redgarl   07-24-2009 at 07:35:56 AM

ezkiller wrote :

use speedfan..
hwmonitor is not that good


I got the exact same result in speedfan.

Reply to redgarl
randomizer   07-24-2009 at 07:51:47 AM

Why are people using Intel terminology like Tj Max for an AMD setup? Anyway, Phenoms and Opterons (K10-based, not K8) only have a single temperature sensor in each package, so you will only get one reading.

Message quoted 1 times
Reply to randomizer
redgarl   07-24-2009 at 08:05:09 AM

randomizer wrote :

Why are people using Intel terminology like Tj Max for an AMD setup? Anyway, Phenoms and Opterons (K10-based, not K8) only have a single temperature sensor in each package, so you will only get one reading.

I just figured it out why I was only reading a single core in Coretemp, but thanks.

 

Maybe you can help me out a little. In your opinion, what temperature should I trust...? My BIOS sensor or my DTS sensor?

 

On Coretemp site they told peoples that Coretemp was more appropriate for an accurate reading that a BIOS sensor could fluke out... should I believe it? Because I really tend to believe it, but I could be wrong.


Message edited by redgarl on 07-24-2009 at 08:07:20 AM
Reply to redgarl
randomizer   07-24-2009 at 10:16:47 AM
Best answer

I don't know a great deal about AMD sensors or thermals. But the DTS will read from the core so it's going to provide a reading closer to the actual temperature than an external sensor, provided it isn't prone to alot of error like the old Brisbane core's DTS.

Reply to randomizer
mugz   07-24-2009 at 12:41:33 PM

DTS is about the most reliable there.

Core and/or Realtemp should show more accurate readings than the BIOS, but just remember that the BIOS is only going to display the IDLE temp of the CPU, no load temps.

Speedfan... has anybody else picked up the issue with Speedfan crashing the SMBus?

------------------------------ http://www.catb.org/~esr/faqs/smart-questions.html - I WISH PEOPLE WOULD APPLY THIS!
 Reply to mugz
rubix_1011   07-24-2009 at 03:40:34 PM

BIOS temps will always be lower...think about it. Once you load into an OS, you are going to have more load on your system (even at idle) than you see in the >1mb BIOS that loads up. Often times, many of these programs read your BIOS temps...some just report it incorrectly due to differences in chip thermal deltas. Updates to this software usually fixes this...or you have crappy hardware sensors.

Reply to rubix_1011
redgarl   07-25-2009 at 02:36:50 AM

ezkiller wrote :

so your still unhappy about the 2-3C drop after applyin AS5?? then i would suggest dont get your hopes so high..cuz you'll fall down pretty quick
remember thermal paste only assists the cpu to heatsink for better conduct of heat..not to heavily rely on it..



My Core temp are really great, I am not complaining. But AS5 take 200 hours to show it`s true thermal conductivity.

Reply to redgarl
zipzoomflyhigh   07-25-2009 at 03:26:14 PM

Coretemp will give you your actual cpu temps, not tj temps. My gigabyte bios is waaay off.

Reply to zipzoomflyhigh
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