High CPU Temperatures!

[kenzig]

Hi all!

I brought the i7 4790K some time ago and have installed an CM Seidon liquid cooler to it.
I have noticed that when I do some intense 3D work and simulations, the CPU temperatures rise up to 100 degrees! I know this is not supposed to happen.
I am just wondering can this be because I am not using a graphics card? I didn't have a budget for a decent graphics card so I decided to wait a while. Should I get 1 soon?

Please let me know soon since I don't want to damage the processor.

Thanks in advance!

 

[nukemaster]

The integrated video card should not add that much heat to a system.

Please make sure your pump is running full speed(connect it to the power supply if you can or use a fan header with speed control off).

If you are overclocked, revert to stock speeds for now.

 

[13thmonkey]

it'll be poor contact between the block and the CPU, or a bad pump.

So is the pump working and is liquid flowing?
Did you remove the plastic cover on the thermal paste on the block?
was there thermal paste on the block?
is it tightly enough clamped down?

 

[kenzig]

Correction- I have a old graphics card on, some 4-5 years and its a cheap low end one. Can that be the problem.

I have checked the fans, clamps, thermal paste, pump is also at full speed! I even changed the paste once and the temperature very town by around 5 degrees that's it. And now its back to 100!

 

[13thmonkey]

how much paste? (although that high does not indicate poor paste, but poor contact, poor paste would be +10-15C not +25C)

Which leads us to voltage, what voltage are you displaying in cpu-z? If too high then go for a bios reset to defaults.

 

[kenzig]

Core voltage is 1.200 max. Is this right?
Although I have reset the bios a few time, it really didn't changed anything.
What do you suggest?

 

[13thmonkey]

1.2 sounded high to me, but Google shows not uncommon. Must be an issue with removal of heat and not over generation of heat then.

Is the block hot, is the rad hot?

 

[kenzig]

Actually not very hot. Just warm. I am doing some intense simulations right now, the cpu temps are at 100 stable, mobo is at an average of 54. The pump is flowing liquid and the brick and rad are both not hot.

 

[13thmonkey]

Actually not very hot. Just warm. I am doing some intense simulations right now, the cpu temps are at 100 stable, mobo is at an average of 54. The pump is flowing liquid and the brick and rad are both not hot.

OK so something is stopping the heat going from the CPU at 100c to the block. Pressure or something in the way. There's no chance that you're got spacers you shouldn't have, so it's clamping on the spacer and not the CPU?

 

[nukemaster]

If the rad is not hot, something is wrong.

It may be worth trying the stock cooler if you have it.

Remember to clean before adding any paste(you will need to do this to change coolers or re-seat the old one/new one).

 

[kenzig]

Actually, innitially I had the stock cooler on. But due to high temps I switched to this cooler. But there is no temp change.
Can it be a faulty chip?
I am sorry but I donot know what a spacer it.

 

[nukemaster]

Spacers hold a cooler at the right height to touch the cpu, but not crush it.

What are you using to monitor cpu temperatures?