OC3D 2020 CPU Cooler Roundup

Thermal Testing - Overclocked i9-9900K

OC3D 2020 CPU Cooler Roundup

Thermal Testing - Overclocked i9-9900K

Our overclocked testing is the same as our stock testing, but with the clock speeds and voltages cranked up on our i9-9900K processor. With this change, we can see that a lot more CPU coolers fail our test, as should be expected when sub-£50 coolers are pitted against an overclocked 8-core monster. 

When it comes to air-coolers, only heatsinks like Cryorig's R1, Noctua's NH-D15 are able to handle our stress test without major issues, with other air-cooled heatsinks failing when used with low RPM fans. 

For the most part, our liquid coolers had no trouble keeping our system cool under load, with the only exceptions being Cooler Master's ML240R RGB with low fan RPMs and Corsair's H115i and H150i with each cooler's "Quiet Mode". In the case of these Corsair units, these failures could be due to software, as the smaller H100i RGB Pro XT has no trouble keeping this system cool under the same loads.  

OC3D 2020 CPU Cooler Roundup  

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Most Recent Comments

08-04-2020, 14:10:30

AlienALX
Great test. Surprised to see the Noctua so low down tbh.Quote

08-04-2020, 14:14:34

WYP
Quote:
Originally Posted by AlienALX View Post
Great test. Surprised to see the Noctua so low down tbh.
Remember that we have a lot of AIOs in there, and loads of 360mm models.

It's doing very well, especially at low fan RPMs. Very impressed TBH.Quote

08-04-2020, 14:25:45

Jaxel
I use a Cooler Master ML240 in one of my PCs... I would not recommend this cooler to anyone. It cools fine. But every few minutes or so, it gurgles.

I also do not recommend most other AIO coolers either. I 3D print a lot of cases, and what I noticed is that for a lot of these coolers, the tolerances on the actual radiator are complete garbage. The holes are not always exact. If you have a case which has variable hole spaces, they should work fine. But if you have cases which expect holes to be exactly 105mm apart, and they are 103mm or 107mm apart instead, you will have problems.

The best tolerances on radiators I have seen are from Deepcool GamerStorm. I highly recommend the GamerStorm Castle 360EX.Quote

08-04-2020, 15:32:37

AngryGoldfish
I'm impressed at how comparable the 280mm Celsius+ is to the 360mm. Given the £30 price difference, if my case could fit the 280mm rad, I'd just go with that.

Quote:
Originally Posted by Jaxel View Post
I use a Cooler Master ML240 in one of my PCs... I would not recommend this cooler to anyone. It cools fine. But every few minutes or so, it gurgles.

I also do not recommend most other AIO coolers either. I 3D print a lot of cases, and what I noticed is that for a lot of these coolers, the tolerances on the actual radiator are complete garbage. The holes are not always exact. If you have a case which has variable hole spaces, they should work fine. But if you have cases which expect holes to be exactly 105mm apart, and they are 103mm or 107mm apart instead, you will have problems.

The best tolerances on radiators I have seen are from Deepcool GamerStorm. I highly recommend the GamerStorm Castle 360EX.
In fairness, the ML240 is over two years old now. In that time pumps have improved substantially in terms of quietness. I jumped aboard AIO's a few years ago and found them to be obnoxiously noisy. I moved back to air cooling and have been very happy. But since then Asetek have released a few iterations that across the board have improved noise levels. If I were building a new system, I'd consider an AIO again.Quote

08-04-2020, 15:36:43

AlienALX
Oddly AMD recommend a 280 for Ryzen 3900x and 3950x. Maybe they have just had more R&D recently? IDK.Quote
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