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Motherboard running pretty hot but CPU ok?

Tags:
  • Motherboards
  • CPUs
  • Cooling
  • Speedfan
  • Temperature
Last response: in Motherboards
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March 26, 2014 2:37:39 AM

So, both AIDA64 and SpeedFan are reporting the motherboard temp in the high 40s, and my cpu temp in the low 20s... This seems a bit weird to me, are the sensors just messed up/switched around or is that really possible? And should I worry about it?

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March 26, 2014 2:50:48 AM

Those temperatures don't seem to be high enough to cause concern, and although it could be a faulty sensor, it could also be because there is little to no airflow getting on those particular areas. I don't know what type of cooler you have on your CPU but there are certain coolers, especially AIO water units that possibly reduce cooling inside of the case because the fan for the traditional air cooler is no longer helping circulate air in the case. If you are concerned, you can put spot fans on areas of the MOBO that are concerning you like the northbridge or vrm areas.
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March 26, 2014 2:51:05 AM

A little bit of info about you system would be very helpful!
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March 26, 2014 12:06:54 PM

logang said:
Those temperatures don't seem to be high enough to cause concern, and although it could be a faulty sensor, it could also be because there is little to no airflow getting on those particular areas. I don't know what type of cooler you have on your CPU but there are certain coolers, especially AIO water units that possibly reduce cooling inside of the case because the fan for the traditional air cooler is no longer helping circulate air in the case. If you are concerned, you can put spot fans on areas of the MOBO that are concerning you like the northbridge or vrm areas.

The weird part is I don't have any liquid cooling, so that temp is with technically 3 fans in the case. I'm more confused than concerned, since I don't really understand how or why this can happen other than bad sensor positioning or some sort of mixup in them. I remember the north bridge heatsink was pretty hot when i checked it yesterday, so I wouldn't be surprised if that part was at high 40 temps. Do you think this is what's going on? And if it is, should I worry about it?

noidea_77 said:
A little bit of info about you system would be very helpful!

Oops, I forgot about that! I bought this one pre-made (didn't buy everything myself), and I'm not sure what the CPU fan is but it seems to be this guy. I have a Gigabyte GA-78LMT-S2 motherboard and 2 case fans. If there's anything else that would help let me know.

It's not an emergency, I'm just a very curious kid and I'm confused as to what could be going on in there...

Oh, and that you both for the quick answers!
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March 26, 2014 1:16:56 PM

An AMD build was what I expected! The "cpu temp in the low 20s" says it. To bring some light in it: You can not really measure temps electronically. What you see is mathematical transformation of a measured voltage. Problem: the voltage doesn't change linear with the temp, every sensor is a bit different and ... The core temp of AMD CPUs seams to be always wrong, whatever software you use. For the board temp use the utility, that came with the mobo and compare the results with other software, like AIDA64. Don't be surprised, if the temp change with the software version! The author may have changed the formula to calculate the temp for a specific sensor.
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March 26, 2014 1:47:25 PM

noidea_77 said:
An AMD build was what I expected! The "cpu temp in the low 20s" says it. To bring some light in it: You can not really measure temps electronically. What you see is mathematical transformation of a measured voltage. Problem: the voltage doesn't change linear with the temp, every sensor is a bit different and ... The core temp of AMD CPUs seams to be always wrong, whatever software you use. For the board temp use the utility, that came with the mobo and compare the results with other software, like AIDA64. Don't be surprised, if the temp change with the software version! The author may have changed the formula to calculate the temp for a specific sensor.


Oh I see, thank you! I had no idea that this happened, since I hadn't read about it anywhere else. That explains the low cpu temperatures, so do you think my mobo is actually that hot? Could it just be the north bridge heating it up?
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March 26, 2014 2:00:02 PM

Var14ble said:
noidea_77 said:
An AMD build was what I expected! The "cpu temp in the low 20s" says it. To bring some light in it: You can not really measure temps electronically. What you see is mathematical transformation of a measured voltage. Problem: the voltage doesn't change linear with the temp, every sensor is a bit different and ... The core temp of AMD CPUs seams to be always wrong, whatever software you use. For the board temp use the utility, that came with the mobo and compare the results with other software, like AIDA64. Don't be surprised, if the temp change with the software version! The author may have changed the formula to calculate the temp for a specific sensor.


Oh I see, thank you! I had no idea that this happened, since I hadn't read about it anywhere else. That explains the low cpu temperatures, so do you think my mobo is actually that hot? Could it just be the north bridge heating it up?

<50 isn't hot! Your bios takes care of that. If it goes above 58 or so, you will here the cpu cooler getting noisy and the temp will go down again.
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