I7 3930k (3rd Gen) + Corsair H100i = Idle CPU 49-60C?

s4nt0s · Apr 18, 2014

Hi guys and gals,

I noticed a few days ago my fans inside my case started kicking on high shortly after booting up my computer and idling. This wasn't happening before so I decided to download Core Temp and CPU-Z and it appears my temps are pretty high for idle.

I'm running a Intel Core i7 3930k (Sandy Bridge-EP) (no overclock) and Corsair H100i and the normal idling temps are fluctuating from 50C to 60C.

I've had this computer for probably around 8 months now and haven't had any issues. Keep in mind I didn't build it myself so I'm kind of a noobie with a lot of this but I can definitely navigate my way around inside the case and know what parts are what.

I see the fans on the radiator are spinning and the blue light on the corsair cover on the CPU are lit up and running.

Temps in my room are probably around mid 70's F.

Here's a screenshot:

http://s30.postimg.org/jdpwq3udt/temps.jpg

If anyone has any ideas of what I should check for, please let me know. As I stated I'm not super experienced but I will take a crack at fixing the issue if you have any suggestions.

Thanks a lot.

jldevoy · Apr 18, 2014

That's very hot for idle, run something and see if the whole cooler radiator heats up or just the point nearest the pipes...which would indicate a broken pump.

ingtar33 · Apr 18, 2014

1) pop the side of your case off and stick a room fan into the openning... if the temps don't drop... take off the h100i and try the stock heatsink that came with the computer. let us know what happens to temps.

s4nt0s · Apr 19, 2014

Thanks for the help guys.

The radiator isn't hot at all, as a matter of fact its cool to the touch while the computer has been running for a while. The rubber tubes are warm and I can feel hot liquid in them but the radiator is cool to the touch.

Do you think this would mean the pump is broken? Is there any way to tell for sure? Should I hear a noise coming from the pump?

ingtar33 · Apr 19, 2014

i was pretty sure i suggested replacing the cooler with the stock unit and telling us what happens to the temps. but yes... assuming temps come down with the stock cooler i would be willing to bet that the pump is no longer working on the h100i

s4nt0s · Apr 19, 2014

This computer was built by someone else and sent to me, I didn't receive the stock cooler when it was shipped so I don't have to test with. I have installed the Corsair Link software and it shows the CPU running around 50+C.

Also, at the top of the corsair link software I see a gauge for the pump and it's moving around 2247-2248 RPM so I'm assuming that means the pump is working?

jldevoy · Apr 20, 2014

That will be the pump rate, unless the pump is broken. Warm tubes and a cold radiator usually indicate a pump problem.

ingtar33 · Apr 20, 2014

the pump motor can turn without the pump working. for example if the impeller is broken.

your symptoms are indicative of a malfunctioning water pump... corsair has awesome customer service. i'd suggest you use it.

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I7 3930k (3rd Gen) + Corsair H100i = Idle CPU 49-60C?

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