Testing results, low fan speed (7 Volts)

Average thermal resistance, 60 W to 340 W

Core temperature (60 W Load)

Core Temperature, Constant Thermal Load

Noise level

Fan Speed (7 Volts)

*Note: When the cooler has two different fans, the fan speed of the faster fan is recorded.

**Note: Some of this review's PWM fans will not start if simply powered from a 7 Volts power source. Electronic supervision is required to start the fan and then reduce the voltage down to 7 Volts, or a PWM source.

Reducing the fan voltage down to 7 Volts shifts the thermal performance charts a little but brings all of the coolers down to virtually inaudible levels. The sole exception is the Okeanos, which definitely improved vastly in comparison to having its fans running at maximum speed, but remains audible.

With the Okeanos losing its advantage of brute force, the Noctua NH-D15 and the Raijintek Tisis now lead the thermal performance charts, closely followed by Cryorig's R1 Ultimate. The Phanteks PH-TC14PE is a bit more complicated, displaying that it can do much better at lower loads than with high loads, hinting that the airflow of the fans is simply not enough for this design to cope with very high loads. Be Quiet!'s Dark Rock Pro 3 is now showing thermal performance comparable to that of the aforementioned coolers, especially when the thermal load is low. Still, the Dark Rock Pro 3 technically loses its acoustics performance advantage. It may be dead-silent, with our equipment unable to record anything about the room's noise floor level, but the rest of the coolers are virtually inaudible as well.

The Thermalright Macho Zero is at advantage in these tests, as the cooler is optimized for low airflow situations. With the TY147A at a dead-quiet operating level, the Macho Zero offers very good thermal performance, especially at lower loads.

The two coolers with the worst overall thermal performance at this test were the Deepcool Assassin and the SilentiumPC Grandis. As far as the Grandis is concerned, the company will definitely not worry about their product not being able to compete directly with the best air coolers available, as it can still offer very good performance for the price of the cooler. The Assassin on the other hand fails to compete as well as it should, falling behind all other similarly sized products and even behind the Grandis during most of these tests.

Testing results, maximum fan speed (12 Volts) Final Words & Conclusion


View All Comments

  • kraznal - Thursday, July 16, 2015 - link

    LOL - "Liquid-based cooling solutions are becoming easier to install and AIO kits generally are hassle-free, yet they are still not favored by the majority of the users. Their space requirements, increased complexity and price hold most people to simple air-based cooling solutions."

    so they become easier to install, hassle-free but somehow managed to keep their complexity? what are talking about??? :)

    anyway, I am sure you know this and you just overlooked this fact to support your own story, liquid cooling sets are NOT more expensive (Corsair H50 costs $60 shipped), are NOT bigger (H50 compared to any of the air coolers here for example), and are NOT complex (whatever you mean by that), or even the noise factor where air coolers need to run on higher RPMs to achieve same cooling effectiveness as liquid coolers - simply there is no comparison between liquid solution and air solution. Cheap Corsair H50 is far superior in every way than those colossal monstrosities you are reviewing here now. Smart user would never chose an air cooler simply because it doesn't make sense to chose an old and less effective idea.

    Therefore please do not spread bullshit just so you can cash a check for an article.
  • rleigh - Saturday, July 25, 2015 - link

    Liquid cooling doesn't always work well. I got a Corsair H60 to put in a Corsair Obsidian case with an ASUS Sabertooth R2.0 mainboard and an AMD FX8350 processor. It worked brilliantly with CPU temperature at ~35C under load. Unfortuately, the layout of the case and lack of airflow around the CPU heatsink lead to the VRMs/MOSFETS around the CPU reaching temperatures of over 85C, no matter how I arranged the case fans. I replaced it with a Noctua cooler similar to this one which also kept the CPU nice and cool, but with the side effect of the large 14mm fans producing sufficient airflow onto the mainboard to eliminate the dead space which caused overheating.

    This isn't to say that closed loop coolers are bad; their performance can be very good. But they aren't compatible with every case/mainboard.
  • kraznal - Wednesday, August 5, 2015 - link

    First: it's been almost a month - E. Fylladitakis - must be on vacations since he has yet to reply to my comments.

    Second: rleigh - very sorry to hear that you had to install additional cooling for your motherboard. It is best to keep high air flow inside the case, if you didn't provide that then no wonder you had an overheating problem.
  • Cvengr - Friday, December 25, 2015 - link


    Here's an interesting link regarding the use of water cooling in data centers (limited to air cooling). Primary issue is safety.
  • alexbagi - Monday, March 7, 2016 - link

    Good picks. I'd also suggest looking at http://www.144hzmonitors.com/cpu-cooler-buyers-gui... for guidance.

    I am going with the 110i myself, as I need water cooling.

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