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
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  • Drumsticks - Monday, July 6, 2015 - link

    They did one of these round ups with the 212 Evo or + a while back, also involving high ends from Noctua (U14 and U12S I believe). They found that it doesn't quite match up, but I know it got a mention for exceptional performance for cheap. I think it falls behind more in noise than performance.

    It definitely would have been interesting to see it in here, but nevertheless, thanks for the review!
  • kmmatney - Monday, July 6, 2015 - link

    I usually undervolt the fan a little - takes care iof any noise issues.
  • Arnulf - Monday, July 6, 2015 - link

    +1
  • Nagorak - Monday, July 6, 2015 - link

    I would have also liked to have a "decent" CPU cooler like that included, as well as the stock Intel/AMD HSF. It's great seeing how these coolers stack up to one another, but it doesn't truly quantify how much of an improvement you're getting over a cheap alternative, or the stock fan. For the record, I haven't run with a stock fan on any main PC I've owned in the past 15 years, but I would be curious to see how much I'm actually gaining.
  • Araemo - Monday, July 6, 2015 - link

    Especially given the raw value of the Hyper 212 Evo at $30, it may get within a degree or two of some of these for half the price or less... which is why my last build had the Hyper 212+ (It's been a few years) - I could have gained maybe 5C by spending 4 times as much.. which didn't seem worth it to me.
  • TheJian - Tuesday, July 7, 2015 - link

    AGREED. I have one, and at $29.95 from newegg just a few months ago on sale it was an AWESOME deal. i4790k can do massive oc's with it and even at full load is not terribly annoying with my 5850 causing most noise when gaming. This is still a top seller and for good reason.
  • LittleLeo - Thursday, July 9, 2015 - link

    Since its about the most popular cooler for gamers that would have been nice.
  • jay401 - Monday, July 6, 2015 - link

    I'm actually really glad to see this article, it's been ages since I've seen a good CPU air cooler roundup and sockets have changed several times over the years so it's nice to know what works well these days.
  • jmke - Monday, July 6, 2015 - link

    air cooling has plenty much run into a wall; heatpipes to copper base, aluminum fins on the heatpipes, put 140mm or 120mm fan... there is not a lot of wiggle room, so performance of those that follow this recipe is very close.

    differentiators now for most part are: socket compatibility, price, installation method. Raw performance/noise is no longer the focus imho if you want a successful product
  • meacupla - Monday, July 6, 2015 - link

    It's not so much socket compatibility, so much as how compatible you can make your heatsink against mobos that have poor design choices.

    Although not as common on mATX and larger boards, mITX suffers a lot from this, because manufacturers attach fragile bits onto the back of the mobo, near the CPU socket, that interfere with the mounting bracket. Either that, or the CPU socket is placed too close to the PCIe, etc.

    That Reeven Okeanos is something I haven't seen since Athlon 64 days, which are heatsinks paired with a stupidly loud fan. Look, if I wanted a heatsink with stupidly loud fan, I would buy an amazing heatsink or watercooler first, then attach the stupidly loud fan to that, instead of some mediocre heatsink with a mediocre fan.

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