Is a Noctua NH-D15 sufficient for a highly overclocked i5 8600k?

lockstercarbz

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May 3, 2018
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I'm going to be getting a new build soon with an 8600k and I was thinking of getting a Noctua NH-D15 to cool it as I want an all-core overclock to 5GHz. So I have two questions:

1.Will my case (Cooler Master MasterBox MB500) be able to fit this cooler?
2. Is this a reasonable overclock and will the cooler be able to keep it below around 75 degrees?

Thanks a lot for your help!

Here's a link to the case: http://www.coolermaster.com/case/mid-tower/masterbox-mb500/
 
Solution
Case Clearance for CPU Cooler is 160mm. Noctua - NH-D15 height is 165mm.
So no, they wont fit.

However the latest version of that cooler is Noctua - NH-D15S is 160mm. So that should fit. Same cooler just concised for generic cases.
And it should be fine for the 8600k. Should keep temps low mostly. However, no cooler can guarantee you below 75 deg at those kind of clocks.

Case Clearance for CPU Cooler is 160mm. Noctua - NH-D15 height is 165mm.
So no, they wont fit.

However the latest version of that cooler is Noctua - NH-D15S is 160mm. So that should fit. Same cooler just concised for generic cases.
And it should be fine for the 8600k. Should keep temps low mostly. However, no cooler can guarantee you below 75 deg at those kind of clocks.

 
Solution

snake902

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I have:

8600k on an ASUS ROG Strix Z370-E
Noctua NH-D15 w/ two NF-A15's
Corsair CX750

I'm doing 5GHz @ 1.350v manual OC and my VCore doesn't exceed 1.285v.
Idle temps (I say idle with 2 monitors, 3 chrome tabs, discord, steam, HWMonitor, and various driver softwares open) are 27-31c.
Long gaming sessions will usually leave the max temps at around 75c but never exceed 78c, which occurs rarely.

It was a huge pain to get this the way it is and I would even say that I got lucky. The few points above 72c isn't a huge concern of mine bc it probably isn't a whole lot worse, but I could be wrong.
Definitely get a large case and fill it with fans with PROPER airflow (lookup guides for your case).
My case is a Fractal Design Define R4. The closest thing you could get to that now would be the Fractal Design Define R6
 

lockstercarbz

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I'm going with a Fractal Design Define S, which comes with two pretty good, silent fans. Should I install more fans?

Also, those results from your overclock sound pretty good tbh, they're safe enough, well within operating temperature.
 


More fans helps most of the time, not always though. Your orientation and configuration should be proper as well.
Front/Bottom/Side - Intake
Rear/Top - Exhaust
A lot depends on the ambient as well. If the fans are taking in hot air from the room itself, no matter how many fans you install, it wont help the cause.

Define S is a very good case with good airflow and aesthetics. Its cooling system is pretty robust.
Cooling system
Front: 3 – 120/140 mm fans (included is 1 Fractal Design Dynamic GP14 fan, 1000 RPM speed)
Rear: 1 – 120/140 mm fan (included is 1 Fractal Design Dynamic GP14 fan, 1000 RPM speed)
Top: 3 - 120/140 mm fan (not included) or 1 - 180 mm fan with 165mm hole spacing (not included)
Bottom: 1 – 120/140 mm fan (not included)
Side: 1 – 120/140 mm fan (not included)
Dust filters: Bottom and front intakes

You should be installing atleast one more 140mm to the front along with the one given. Atleast one or preferably two at the top.
Make sure your cpu cooler is aligned directly towards the rear or top exhaust, so that it can help the hot air straight out.