New i7 4790k running hot after reapplying thermal paste twice

[Guest]

I'm using the stock heatsink with it. I've reapplied thermal paste twice, less than a minute of prime95 makes the temps go up into the 90-100 area, this is even with my case open.

The fan is spinning, but I don't understand why it's running so hot. Is there anything I can do besides buying a new cooler? I'm kind of tapped out from buying an i7 haha.

 

[Darkbreeze]

Either you're applying the wrong amount of paste, which should be no more, and no less, than about a very small snow pea sized amount, about half of a #2 pencil eraser or a little less, or you don't have the heatsink mount secured properly. It's very easy to not have one of the corners or the latch fully seated. That, or you're overclocking on a stock heatsink fan which is a bad idea.

 

[Guest]

The compound says a small line down the cpu. I did very little the second amount. Because I thought I might have put too much. I tried the push pin test and pushed down for 30 seconds while running stress tests, nothing. I have another stock cooler from my i5 might try, they are all the same right? I'm kind of lost what to do besides buy a cooler for it :/

 

[okcnaline]

That, or perhaps the ambient temperature in your room is high.

 

[Guest]

There is another PC in the room and I have lower idle temps than that PC right now. It's only under stress it will shoot up to 100 degrees almost.

 

[okcnaline]

Then I guess darkbreeze got the answer.

 

[geofelt]

----------------how to mount the stock Intel cooler--------------

The stock Intel cooler can be tricky to install.
A poor installation will result in higher cpu temperatures.
If properly mounted, you should expect temperatures at idle to be 10-15c. over ambient.

To mount the Intel stock cooler properly, place the motherboard on top of the foam or cardboard backing that was packed with the motherboard.
The stock cooler will come with paste pre applied, it looks like three grey strips.
The 4 push pins should come in the proper position for installation, that is with the pins rotated in the opposite direction of the arrow,(clockwise)
and pulled up as far as they can go.
Take the time to play with the pushpin mechanism until you know how they work.

Orient the 4 pins so that they are exactly over the motherboard holes.
If one is out of place, you will damage the pins which are delicate.
Push down on a DIAGONAL pair of pins at the same time. Then the other pair.

When you push down on the top black pins, it expands the white plastic pins to fix the cooler in place.

If you do them one at a time, you will not get the cooler on straight.
Lastly, look at the back of the motherboard to verify that all 4 pins are equally through the motherboard, and that the cooler is on firmly.
This last step must be done, which is why the motherboard should be out of the case to do the job. Or you need a case with a opening that lets you see the pins.
It is possible to mount the cooler with the motherboard mounted in the case, but you can then never be certain that the push pins are inserted properly
unless you can verify that the pins are through the motherboard and locked.

If you should need to remove the cooler, turn the pins counter clockwise to unlock them.
You will need to clean off the old paste and reapply new if you ever take the cooler off.
----------------------------------------------------------------------------------

 

[Guest]

This is my third time, reapplying paste and seating the fan. I did the small sized pea like suggested. Still temps shoot up to the 100s in seconds during stress test, but idle temps seem alright sitting at 38 as I'm writing this. I'm at a loss what to do. I even have my case open.

 

[Guest]

Well...now I feel dumb. It was just a bad sensor reading. Checked with another sensor and used burn test and passed. Well I just wasted my night of gaming on some bullcrap Thanks for helping all.

 

[Darkbreeze]

CPU fan RPM? Certain the CPU fan is connected to the CPU fan header, and not one of the case fan headers or a fan hub?

I'd be willing to bet, since errors or outright shut downs are not the issue, that the problem must be related to improper mounting regardless of how many times you've installed the cooler. I've used the stock cooler on twenty or thirty Xeon and i7 builds, and have never had issues running stress. What are you using to run the stress test?

What version of Prime95 are you running and which test? You should ONLY be running version 26.6, which does not use AVX instruction sets, thus does not create unrealistic thermal conditions. This:

http://windows-downloads-center.blogspot.com/2011/04/prime95-266.html


And, you should only be running Small FFT. Not large FFT and not Blend.

 

[okcnaline]

xDDD
You're welcome!

 

[geofelt]

I might suggest OCCT.
It uses a more representative set of instructions to test.
It will stop the test at 85c.

Your idle temp is nominal, indicating that your mount is ok.

Whatever, do not worry about damage from heat.
The cpu will throttle or shut down if it gets too hot(about 100c)
Under normal conditions you will not reach stress test levels.

The stock fan can get noisy under load.
I would spend $30 or so for a tower type air cooler with a 120mm fan. Cryorig H7, for example.