Methodology
Cooling an AMD Ryzen 9 3950X at various levels of power consumption, joined by 16GB Crucial Ballistix Sport (2x8GB) DDR4 memory on an MSI B550 Tomahawk (BIOS 7C91vAB). The Asus ROG Strix GTX 1060 6GB runs in zero-fan mode for the CPU stress tests only, and a Fractal Design Ion Gold 750W serves as the power source. The whole thing is housed in the Thermaltake Core P3 as an open benchtable.
The test system runs Windows 10 Pro 22H2 (build 19045.2251). All data sets are captured with HWInfo64 v7.34-4930 – 5000ms logging, the specified temperature is derived from the sensor CPU Die (Average). Since I don’t have air conditioning, the values in the graphs are the delta between room temperature and CPU temperature. This allows a fair comparison of all cooling systems, even if the ambient temperature is different. The thermal paste included with the cooler or pre-applied is used in each case.
I determine the sound level with a Voltcraft SL-200 meter at a distance of 40cm, which operates in 125ms cycles in Lo mode. The room was measured at 33.2 dB(A), an external sample table helps with the breakdown.
Benchmarks
In the first test run, a loudness of 40 dB(A) was set at 40cm from the center of the front, in my setup that’s 59% PWM with both fans installed:
And after that, this cooler is still allowed to show what it can achieve in terms of cooling performance at maximum speed, regardless of the loudness. A maximum of 47.4 dB(A) was achieved at 100% PWM and 40cm distance.
A full comparison to other coolers can be traced here:
</x>https://www.igorslab.de/uebersicht-der-bisher-getesteten-luft-und-wasserkuehler/
Summary and conclusion
I think the graphs speak for themselves, at this point in time the Assassin IV takes over first place among air coolers and can even minimally outperform the recently tested flagship from Cooler Master. And only a few coolers look that unimpressed, because you can’t see any of the fans in the normal installation and it almost seems as if you have a passive cooler in front of you.
However, this cooler isn’t quite as quiet, even at the standardized noise level of 40dB(A), it produces a background noise which, in my opinion, is less noticeable in the other noises of a computer than in an air cooler. If you pull the middle fan out a bit, the noticeable noise disappears, so it must be with the inner geometry and/or the interaction of normal and inverted fan. I wouldn’t call the whole thing particularly annoying now, but it’s worth mentioning. The price is also worth mentioning, because Deepcool naturally wants to pay for these good results.
A recommended retail price of 99€ was communicated to me before release, and this morning the first store had it listed for 140€. In the meantime, however, the best price has already fallen to 105€, so already on day 1 priced below the biggest competitor MasterAir MA824. If you were looking for a lot of cooling power and a simple look, you will find the right combination of both here. The 6-year warranty should also be mentioned positively.
The test sample was provided by Deepcool without obligation. There was and is no influence on the tests and results. There was also no compensation for expenses and no obligation to publish.
DeepCool Assassin IV (R-ASN4-BKNNMT-G)
![]() | sofort lieferbar | 79,90 €*Stand: 14.08.24 23:55 |
![]() | Lagernd im Versandlager - Lieferzeit 2-5 Werktage | 91,89 €*Stand: 14.08.24 23:48 |
![]() | Auf Lager; Lieferzeit: 2 Werktage | 91,90 €*Stand: 14.08.24 22:24 |
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