Any way to link pwm case fan speed to both cpu AND gpu temp?

AshBorer · Aug 28, 2017

Hi, I have four PWM case fans that change speed depending on my CPUs temperature. I've found that sometimes the only load my computer will be experiencing is on the GPU only, meaning it heats up and the fans start spinning fast. The case fans don't respond because the CPU is under almost no load, and it can leave my GPU starved air. Is there any way to get my case fans to speed up when either my CPU or GPU comes under load, rather than solely the CPU?

Thanks.

ride1226 · Aug 29, 2017

Interested in this as well. I have been with watercooling for the past 5 years and now that I'm back on air I am totally thrown for a loop on that exact dilemma.

theunknownkid · Aug 29, 2017

follow this jaytwocents guide -

doyll · Aug 29, 2017

Sorry but I'm not spending 15 minutes listening to him.

@AshBorer I'm sure there is a way to wire up with variable voltage to run max speed bases on both CPU and GPU, but I doubt it can be done with PWM. What I normally do is have case setup with 2x front and1x 140mm bottom intakes using CPU control for either both front or top front intake and using GPU control for bottom and possibly lower front intake.

You might find the following of interest
Normal PWM Splitter with PSU Power & Auxiliary RPM Plugs
How to Monitor RPM of Fans on Splitters & Hubs
GPU PWM to Normal PWM Splitter with PSU Power & Auxiliary RPM Plug

And
How airflow works
Setting up a case for optimum cooling

as well as
Case Bottom Spacing Effect on Airflow to Bottom Fans

There are more topics in that thread like how to figure out what kind of airflow your fans will give by looking at theirstatic pressure and airflow ratings, how some fans perform, etc. The opening post is index, click on topic to see it.

Argos7293 · Aug 30, 2017

Quote:

Originally Posted by AshBorer

Hi, I have four PWM case fans that change speed depending on my CPUs temperature. I've found that sometimes the only load my computer will be experiencing is on the GPU only, meaning it heats up and the fans start spinning fast. The case fans don't respond because the CPU is under almost no load, and it can leave my GPU starved air. Is there any way to get my case fans to speed up when either my CPU or GPU comes under load, rather than solely the CPU?

Thanks.

If you have an Asus motherboard you can use up to three temperatures with different percentages to control a fan with Thermal radar. Also I think you can do the same with speedfan.

Cyph3r · Dec 15, 2017

OP, use Speedfan - does exactly what you want to do, and I use it for the exact same reason.

I have my PWN case fans tied to both my CPU AND GPU temps, so if one heats up and the other doesn't, the fans will still ramp up!

Any way to link pwm case fan speed to both cpu AND gpu temp?

AshBorer

ride1226

theunknownkid

doyll

Argos7293

Cyph3r

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