Noctua NH U12S SE AM4 or Corsair H115i PRO [2600x/3600x] - Page 7 - Overclock.net - An Overclocking Community

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Noctua NH U12S SE AM4 or Corsair H115i PRO [2600x/3600x]

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post #61 of 63 (permalink) Old 06-25-2019, 05:31 AM
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Quote: Originally Posted by rul3s View Post
That makes a lot of sense.
Friday when I received the noctua I've made some tests, with H115i PRO before dissasemble I got 67º max temp on realbench.
30 minutes later, with NHU12A, got 74º on max temp with same test.
At first I was thinking about thermal paste, just need time to sit down, but, heatsink was really "hot" so thermal-conductivity was working good.
Maybe PBO was reaching higher than with CLC, I dont know now, but 100% agree that test should have been made with fixed voltage/freqs, now it's to late.
But I'm happpy with the change, NHU12A is not as big as I thought and its working pretty well and silent, so it's OK, but I'll keep in my mind that H115i PRO was performing better, louder, but better.
Keep in mind CPUs under air coolers should reach max temp in a few minutes, like 2 or 3, maybe 5 minutes. That is assuming CPU goes to 100% load as soon as test starts .. and case airflow is supplying air at or near room ambient to cooler.

Liquid cooling takes longer because it take longer for coolant to reach stabled load temp. The more coolant in the loop the longer it can take.

So your 30 minutes means it to that long for coolant to reach stable temp.

Below is graph of test run on my old i7-980. You can see how fast the temp stabilizes when load starts and ends. This was on PH-TC14PE cooler w/ TY-143 fans on it running about 1200rpm. Case had 2x front and 1x bottom TY-140 fans speed controlled by CPU temp idling at 600rpm and at about 900rpm when CPU was under load and heating up.
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Phanteks Owners Club Ways to Better Cooling
i7 980 @ 3.55GHz =PH-TC14PE w/2x TY-143 fans =Crucial Ballistix 3x4GB =GA-X58A-UD5 =ASUS GTX580 DirectCU II =Enermax Modu84+ =Define R2 w/3x TY-140 case intake fans; all PWM controlled by CPU fan socketPhanteks Enthoo Primo MoBo Rampage III Extreme CPUi7 980X
@ 4.0GHz =R1 Ultimate w/2x TY-143 fans =Dominator GT 6x2GB =Rampage III Extreme =ASUS GTX580 DirectCU II =TX850 =Enthoo Primo w/ custom castor base

Last edited by doyll; 06-25-2019 at 05:41 AM.
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post #62 of 63 (permalink) Old 06-25-2019, 03:36 PM
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There is barely any coolant in an AIO, my h150i was reaching max coolant temp in about 5-10 minutes on 9900k. It could take longer on less powerful CPU's.

Core i9 9900K @ 5.2 || EVGA Z390 DARK || 2x8GB G.Skill TridentZ RGB 4600 C18 @ 4266 C17 || GPU: EVGA Kingpin RTX2080Ti @ 2130MHz || Samsung 970PRO 1TB + 860EVO 2TB || Lian Li O11 Dynamic White || Corsair AX1600i || Screen: LG B8 OLED 55 and LG 34GK950F
Corsair H150i PRO + Noctua NF-A12x25
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post #63 of 63 (permalink) Old 06-25-2019, 05:16 PM
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That's exactly it. I ran an H100 with very good 120x38s on my x5690 and it had a hard time after about 4300 1.375v. Todays quad cores sip power compared to that old beast, so they more than likely wont get heatsoaked as quick.. unless their caseflow is not flowing as well as they think. I think people are in love with the clean looks, and the "water cooled" feel. I know I was. My 3770k doesn't get my LGMRT warm in the slightest with the fan running, but my x5690 can. A different kind of heat.. beast heat

I prefer my heatsinks these days, no muss, no fuss, no worrys, and I can still keep my overclock in the summer (for now). Win/win.

Its not as clean as an AIO, or CLC or whatever they are.. but if you buy a nice one, a good one, like in the top 5, then its like art, if you have an appreciation for modern manufacturing techniques done proplerly.

I'm kind of all over the place in this post. Cannabis is legal here now, and I've got some good stuff

3770K @ 4600 1.3v/Le Grand Macho RT/TY-143/TF8
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8GB G.Skill BBSE @ 1000 8-9-8-24 1T 1.65v
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