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Speedfan: Using Core vs CPU Temperature

The Navigamer
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To adjust radiator fans based on CPU temperature, is it better to use a MAX of all of the core temps or just use the one labelled "CPU"?

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On 1/22/2017 at 11:27 PM, ItsTheDuckAgain said:

depends on your board. when set to "CPU" it should balance stuff out well enough

My board is an Asus Z97-Deluxe.  I just worry because the CPU temp reads like 50 or so under heavy load, but the cores can jump to 76 and such.

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1 minute ago, ItsTheDuckAgain said:

go with the higher reading and see if it improves.

I've been using the core temps, but they seem to jump around very sporadically.  My fans end up revving up and down a lot; that's why I was wondering if using the more stable CPU temp was okay

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it will be ok - it's not like those modern CPUs can overheat, they will throttle down way before it gets dangerous.

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3 minutes ago, ItsTheDuckAgain said:

it will be ok - it's not like those modern CPUs can overheat, they will throttle down way before it gets dangerous.

I suppose that's true.  Haswell Refresh is supposed to throttle around 72 C, right?

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no idea to be honest. I just set my mildly overclocked 6700K to be monitored by CPU temp on a Noctua DH15 on an ASUS board (z170 pro gaming) and don't have any trouble nor do I expect any. Will have a look at per core temps if you want me too. will take some time, currently in the office

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1 minute ago, ItsTheDuckAgain said:

no idea to be honest. I just set my mildly overclocked 6700K to be monitored by CPU temp on a Noctua DH15 on an ASUS board (z170 pro gaming) and don't have any trouble nor do I expect any. Will have a look at per core temps if you want me too. will take some time, currently in the office

I would be curious to see them, if you don't mind.  Thanks for helping, by the way :)

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1 minute ago, ItsTheDuckAgain said:

np - will do - gonna take some time though - won't be home for the next ~10 hours :-)

No worries.  Thanks man

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On 1/24/2017 at 11:55 AM, NoobCase said:

Pretty sure the thermal Junction is 100c on 4790k 

I think you're right.  I turned down the fans to see when the CPU would start throttling; right around 100C on the core temps is where it hit the limit.

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With water cooling you should not be using CPU temp to control the fans, you should be using the water temp since that is what the radiator is cooling. If you don't have a temperature sensor in the loop then you can use CPU (package) but I would give it a decent hysteresis since increasing fan speed every time your CPU heats up will not actually cool the CPU any better, it'll just make your computer louder for no reason.

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Having issues with a Corsair AIO? Possible fix here:

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Are you getting weird fan behavior, speed fluctuations, and/or other issues with Link?

Are you running AIDA64, HWinfo, CAM, or HWmonitor? (ASUS suite & other monitoring software often have the same issue.)

Corsair Link has problems with some monitoring software so you may have to change some settings to get them to work smoothly.

-For AIDA64: First make sure you have the newest update installed, then, go to Preferences>Stability and make sure the "Corsair Link sensor support" box is checked and make sure the "Asetek LC sensor support" box is UNchecked.

-For HWinfo: manually disable all monitoring of the AIO sensors/components.

-For others: Disable any monitoring of Corsair AIO sensors.

That should fix the fan issue for some Corsair AIOs (H80i GT/v2, H110i GTX/H115i, H100i GTX and others made by Asetek). The problem is bad coding in Link that fights for AIO control with other programs. You can test if this worked by setting the fan speed in Link to 100%, if it doesn't fluctuate you are set and can change the curve to whatever. If that doesn't work or you're still having other issues then you probably still have a monitoring software interfering with the AIO/Link communications, find what it is and disable it.

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