Just got 7700k. Very high temps, quality cooler, no OC

PopeCheese

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Aug 2, 2017
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z170a gaming m5
aorus 1080 ti (not xtreme)
i7-7700k w Noctua NH-D14 using both fans and the paste that came with cooler (NT-H1)
16 gb ddr4 2400 ram
Corsair RM650x gold
Fractal Design Define S Black Window ATX Mid
One 140mm output fan in back, one intake in front, and I have one extra 120mm intake fan on the bottom


Previously I was using 6600k, evo 212, mild OC to 4.1 and ram XMP from 2133 to 2400 temps never reaching over 60-61 under heavy load for extended periods of time. Had a 1070 which would reach temps up to 85

Just purchased a 1080 TI because I couldn't help myself. I'm very happy with that. Temps now never reach over 75 under extended heavy load

My 7700k, which I just got today, is another story entirely. Right now I am not overclocking at all (besides default boost to 4.5). I can not lower voltage at all, which seems to be sitting around 1.2 at auto.

Idle (not totally idle, usually cores are always floating between 5-15% usage) I sit around 45-55.

Under full load, I start in the 65-75 range, but as I continue to play (warhammer total war, BF1, Witcher 3 etc) it slowly climbs. After an hour or two my cores sit 70-80, with very common spikes up to 85, and occasionally with spikes (not extended temps) reaching up to the 90's.

With XMP enabled just to hit my 2400, Temp spikes reach over 95. I don't even want to attempt overclocking the CPU here.

This has to be wrong, right? Should I try to reseat the heatsink? I Know these cpu's run abnormally hot, but temps in the 90's with a high quality cooler like this just can't be right. I was hoping to be able to do another mild overclock with this as I did with the 6600k, probably no more than 4.8, however I will say my performance has been so increased already even without overclocking from the 6600k I don't even necessarily feel the need to do that anymore. My FPS seems to have gone up a solid 20 or so depending on the game (almost 50 in BF1, holy cow!)

I used the pea drop method, but I did have a bit of trouble getting the screws to latch and might have wiggled it a bit more than you should.

I just am not satisfied with these temps. I can live with hitting the low 80's, but I can't have peace of mind with spikes up to the 90's.

Any advice from you fine folk?

Thanks in advance!
 
Solution

assasin32

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Apr 23, 2008
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As stated by jankerson it was probably not mounted correctly, ideally you would clean up the CPU and heatsink and reapply the paste and remount it. But if for whatever reason that is not an option just remount it and stress test it and keep an eye on the temps. If it looks good don't worry about it.
 

PopeCheese

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Aug 2, 2017
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From what I can tell the best non-metallic thermal paste you can get right now is the grizzley kryonaut, so I ordered some of that, should be here tomorrow and I will try reseating after cleaning the heatsink and cpu.

Coffee filters are okay to use for that? and do quality of the cleaners come into play? I have a set of arcticlean remover and purifier here I can use.

How clean do I need to get the cpu? When I cleaned off my 6600 when I took it out, I was not really able to clean out the creases around the outside of the CPU. Will that effect anything if there is some residue left over there?
 

danielthegreate

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Apr 4, 2017
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I usually use normal tissue paper, coffee filters are the best. Use some rubbing alcohol it works great. You don't need to get it absolutely shiny and the residue on the sides doesn't matter. Just clean it as best as you can.
 
Using Noctua's supplied paste on a D15, i deviated from the 'single pea sized blob of thermal paste hopefully flattened out' to putting 5 BB sized dots, and spreading it manually to within 1 mm of edge of heat spreader. Mine is spread thin enough to easily read the Intel logo thru the dark grey paste...

Idle-33C, gaming 61C, IntelCPU stress 64C, Prime95/small FFTs, 71-73C (climbs no further after 10-12 minutes...)
 


It does sound like the Noctua is not making good contact but wiggling it around in the tightening stage doesn't hurt, it actually helps the seating of the thermal compound to the heat sink base.

The NT-H1 thermal compound is good TIM and should yield good results if the thermal footprint is good and the CPU die is fully covered.

The 7700K core die underneath the heat spreader runs perpendicular to the clamping wings of the heat spreader.

With all the suggestions out there regarding TIM application I finally settled on running a thin line directly over the die location, that way the die area is fully covered.

Knowing is better than wondering, I strongly suggest you pull the Noctua and inspect the thermal foot print and see what's going on under it.

Secondly you can acquire better temperatures by taking manual control through the BIOS, because some motherboards automatic voltage control just goes way too high.

 
Solution