Stock i7 4790k + Noctua NH-U9B high temperatures during gameplay (BF4)

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veen92

Commendable
Feb 24, 2016
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1,510
Hello.

I recently bought this processor and I bought the fan along with it because I didn't want to use the stock cooler, now I'm wondering if I shouldn't have been so cheap with the fan, or if something is wrong.

CPU: Intel i7 4790k
Cooler: Noctua NH-U9B
Case: Fractal R5

Here is a picture I drew of how I set up all the fans:
0bmNqAE.png


Here are my idle temperatures:
Ndjuv3k.png


Some more info during idle:
DMD6K2F.png


When I play BF4 for around 20 minutes, temperatures start hitting 85c degrees and average at 80c. I haven't got a picture of that yet but I will edit this post later.

I've looked at countless videos and posts on how to apply thermal paste and I'm absolutely sure that I did a good job with that, never the less, I cleaned it completely off three times now varying the amount of paste but I get the same results. It's a thin layer of paste covering 95-98% of the CPU, it's slightly transparent which I've read the majority say is the correct amount.

Now, is this cooler just too bad? Is something wrong? I've tried to include as much info as I possibly could, I'm at a loss why it's running so hot. If there is any other piece of information I forgot to include let me know and I will edit this post as soon as possible.

Thank you very much in advance, I really need help because I don't want to play too much and risk damaging my new CPU.

Best regards,
Simon


Edit: Played around an hour of BF4 tonight and these are the temps I had :
n4AzanG.png


It was a much less intense server (not 64 player in close quarters with grenades/rocket launchers like before). Is it just me or does that seem too hot? Do I need a better cooler? Like a H80i for example.
 
Solution
DonkeyOatie
The U9B is a decent lower-end cooler and I would expect your idle to be as much as five degrees cooler (mine is for my 4790K, even when I was using a RAIJINTEK Pallas, a good $40.00 cooler) The load temperatures are too high as well. 60C ish should be the limit in intense gaming.

1. bad paste job. You say not and know better than me.
2. improper mounting. The cooler is mounted 'off' on the motherboard in some way and so the cooler is not in proper contact with the CPU. (You would expect to notice this when you took the cooler off and noticed that the paste contact was not uniform.
3. dud cooler/heatpipes
4. bad or wrongly aligned fan (suck when it should be blow)
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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The U9B is a decent lower-end cooler and I would expect your idle to be as much as five degrees cooler (mine is for my 4790K, even when I was using a RAIJINTEK Pallas, a good $40.00 cooler) The load temperatures are too high as well. 60C ish should be the limit in intense gaming.

1. bad paste job. You say not and know better than me.
2. improper mounting. The cooler is mounted 'off' on the motherboard in some way and so the cooler is not in proper contact with the CPU. (You would expect to notice this when you took the cooler off and noticed that the paste contact was not uniform.
3. dud cooler/heatpipes
4. bad or wrongly aligned fan (suck when it should be blow)
 
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Solution
V

veen92

Commendable
Feb 24, 2016
4
0
1,510


Hello and thank you for the reply.

Like I said I'm fairly confident in my paste job, but say I got it wrong, could it really differ 30 degrees?
The mounting should not be bad, the only reason I could think of is that one of the bolts on the backside of the motherboard got misaligned the last time I tried changing paste, I'll double check when I get home, and I'll double check the manual.
How can I check if the cooler/heatpipes are faulty? Is that even possible really?
The fans are exactly as I depicted them in the picture, is that how it's supposed to look?

Thank you again for trying to help me.
 
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DonkeyOatie

DonkeyOatie

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Sep 16, 2014
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My students at school build computers and when they have this sort of problem, so far it has always been either bad paste application, which it probably is not in your case, or an improperly mounted cooler, and once someone pit the fans on backwards.

If it is none of those, (and the fans are running at proper speeds) then it has to be a problem with the cooler itself. I'm also assuming that you are not using any of the speed reducers on the fans. Here's a review http://www.frostytech.com/articleview.cfm?articleid=2270&page=5 which shows what you should be getting.

It is possible you have a 'hot' chip and that would explain most of the idle temp, but the load temps are still too high even for that.
 
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veen92

Commendable
Feb 24, 2016
4
0
1,510


[video="https://www.youtube.com/watch?v=2-XsfF3r8mI"][/video]

I shot this video showing the way the fans spin, the backplate and how all those bolts are flush with the plate. I used the 4 spacers that came with it, I read the installation manual grandpa-level-thoroughly, I removed the rubber inlay, the fastening brackets on the correct side, the mounting bars in the correct holes, everything should be correct. I spent hours researching how to install this thing beforehand to make sure I didn't mess it up, I've handled everything with super care and while I cleaned the CPU when reapplying the paste it put the bottom side in the little plastic packet they come with.

I'm very certain the fan is making good contact with the CPU because when I took it off to look at the paste last time I reapplied it the small pea had spread out successfully on the CPU heatsink.

What I very much want to know, if the CPU sometimes reaches 85c and sit around 80c while I'm playing Battlefield, am I hurting the CPU? Or is it fine to play while I troubleshoot this issue?


EDIT: I forgot to mention I turned off hyperthreading in bios (everything else is stock settings) to get rid of stutters commonly caused by this in BF4, but that should only reduce heat, no?
 
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veen92

Commendable
Feb 24, 2016
4
0
1,510
Hello guys! When I first installed the CPU I went into BIOS before booting up my computer and loaded the defaults. After having these temperature issues I went into BIOS again and looked at the voltages. I noticed that the VCORE was at 1.37V and I changed it down to 1.190V, after that my temperatures only reach 50-55c while playing Battlefield. Feels like a noobie mistake by me but I wanted to share the answer incase someone happens to do the same mistake in the future. Thank you!
 
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