8700k Temp Issue

[tinytadpole]

I left my PC on during the night as I was mining with my GPU. This morning the system restart during the evening. I was not sure why it restarted as I turned off automatic updates in Windows.

I opened Intel XTU to see if there was a system crash and noticed my idle temps were in the 60C range, which seems a little high. I ran a quick Cinebench with the 8700k and my temps are going to 100C and the chip begins to thermal throttle. This was not the case a month ago as I overclocked the CPU to 4.8 and could run the bench with my temps in the low 80s.

I thought that maybe some got inadvertently changed in the bios so I reset the bios to factory defaults and booted back into the system to run another Cinebench. During the run I got the same results at stock settings.

Here are my system specs:

CPU: 8700k
Motherboard: Gigabyte z370 Gaming 7
CPU Cooler: Corsair h115i

When I look into corsair link it says my pump is running in performance mode and running around 3000 rpm. Both of my radiator fans are spinning fine. I used Thermal Grizzly Kryonaut thermal paste for the cooler.

The only thing I have done different on this build was with the thermal paste. I have not used the Kryonaut before and instead of using the "pea size" method, I used the tool that was provided with the past to spread it out on the IHS. But I applied the thermal paste over a month ago and the temps were fine. Nothing has changed since and now my chip is throttling.

Does anyone have any ideas on what troubleshooting steps I should take next? Do you think that my h115i pump died despite that corsair link is saying the pump is working? I really don't want to go buy a new CPU cooler if this one is fine.

Any assistance you guys can provide will be very helpful. Thanks in advance.

 

[jay32267]

I don't think the paste changed. Check to make sure if your cooler is loose....but if it's snug, I'd be looking at the pump...or possibly an air lock in the coolant or something like that.

 

[LordVile]

It's an 8700K?

 

[tinytadpole]

I don't think the paste changed. Check to make sure if your cooler is loose....but if it's snug, I'd be looking at the pump...or possibly an air lock in the coolant or something like that.

I will check the screws to make sure the cooler is seated, but I am about certain that it is. How would I know if it is the pump or an air lock in the coolant? Corsair link says the pump is running and it sounds like it is running. Any ideas on how I should check the pump? How would I check the coolant? I guess I could bite the bullet and buy a new cooler, but I don't want to buy a new cooler and still have the problem.

My thought about changing the thermal paste is just because it is the only thing I did different with the build.

It's an 8700K?

Yes, it is an 8700k.

 

[jay32267]

I'm not a pro when it comes to water cooling...although in my experience with PCs I have heard of systems becoming "air-locked" where the pump will run but not pump anything.

I actually used to install pool pumps for a living and this would also happen to them as well. It is initially caused by a leak on the suction line and develops into an air lock.

Another thing that I've heard of happening is the pump impeller coming off the shaft.

The motor keeps spinning and it sounds like it's running but it's not pumping anything.

These are just some ideas.

 

[tinytadpole]

Ok. I will take a look at it when I get home.