[SOLVED] 5600x still running hot with Noctua U9S cooler ?

[youiee]

I was getting high 80s - low 90s when gaming with the stock cooler so I upgraded to a Noctua U9S but am only seeing a decrease of about 10 degrees when gaming. Light use like browsing chrome has it at high 40s - low 50s.

My case is the Fara R1 Pro with the case fans that come with it and a B550 tomahawk motherboard.

I've tried reinstalling the cooler with fresh thermal paste and also turning off PBO in the BIOS with similar results.

 

[Lafong]

I have a U9S but I don't game.

It is an excellent cooler for its size, but it is short and would typically be used only with a fairly narrow case that could not accept a Noctua U12S or U14S. It has a 92 mm fan rather than 120 mm or 140 mm.

I assume you cannot use a taller cooler? The U12S (which I have used) should give you roughly 5 degrees lower temps if your case will accommodate it.

What are your ambient temperatures? Right now, my i5-6600K CPU is idling at 27 degrees (81 degrees Fahrenheit) on a U9S in a 22 degree ambient room (71 degrees Fahrenheit).

You could try dual fans on the U9S, but that likely would not improve temps by more than a degree or two.

Is your Noctua cooler fan running at max speed?

 

[youiee]

My case might be able to support more but I've already put the cooler to use so the place I bought it from won't take it back for a refund.

I'm not sure of the ambient temps but at night when it's cooler the temps drop by about 5 degrees.

I don't have enough clearance next to the ram to fit a second fan.

Not sure, how do I adjust the fan speed? I do have the silent fan cable attached.

 

[Lafong]

I assume you refer to Noctua's included "Ultra Low Noise Adapter". That can easily be detached. It's optional.

It makes a very quiet cooler fan even quieter. You don't need it at all. I've never used mine.

It likely prevents the fan from turning above a very low RPM. You don't want that.

After you get rid of it, use a tool like HWInfo64 to see exactly what speed your case and cooler fans are spinning at.

Your PC BIOS likely has a mechanism to control fan speeds. You can likely force them all to spin at or near their maximum rpm. Look in the BIOS.

I have all of my fans set for "silent" mode. The U9S fan spins near a constant 800 and the 2 Noctua case fans spin near a constant 500. I don't use a video card and care more about noise than temps....which are very low anyway.

Set all fans to run as fast as possible and then re-evaluate temps and noise levels.