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Cooling Efficiency Tests

The results of our cooling efficiency tests are summed up in the diagram and table below:

First let’s discuss the results obtained with default cooling fans. Here we can’t really praise Deepcool Assassin, because it didn’t demonstrate anything remarkable in terms of performance. Even at maximum rotation speed of its two fans it lost 3°C to Phanteks PH-TC14PE with the fans rotating at only 800 RPM. And if we compare the results of both coolers at 800 RPM, then the difference will be truly catastrophic for Deepcool Assassin: 11°C is a total fiasco for the cooling systems in this price range. Why did it happen? This cooler undoubtedly has great potential. Could the reasons lie with the uncoordinated fan speeds and the difference in their diameter? Let’s teak a closer look at the results obtained with two identical 140 mm Scythe Slip Stream 140 fans.

Just look, with two identical 140 mm fans Deepcool Assassin looks way more confident than with its default 120 and 140 mm Deepcool UF fans. For example, at 800 RPM it cools the CPU 4°C better than it did previously. At 1000 RPM the improvement is 3°C and at even higher speeds the improvement varies between 3-4°C. I have to say that this is not bad at all considering that we simply replaced the fans. At the same time I have to say that this upgrade still didn’t allow Deepcool Assassin to catch up with the today’s best air-cooler – Phanteks PH-TC14PE. It is still 2-4°C ahead of the newcomer depending on the fan mode. However, this isn’t such a big advantage anymore.

Now let’s see how Deepcool Assassin will rank if we add it to our database diagram and table*, where all coolers are entered in their default configurations. We will add the results in quiet mode (800/810 RPM) and at maximum speed of both fans (1200/1480 RPM) when the CPU was overclocked to 4.375 GHz at 1.385 V core voltage:

* - The peak temperature of the hottest CPU core is posted on the diagram taking
into account the difference from the current ambient temperature and is reduced to 25°C.

As we see, Deepcool Assassin didn't demonstrate any outstanding results at the lowest rotation speed of its default fans. In terms of cooling efficiency, it falls somewhere between Thermalright HR-02 Macho and NZXT Havik 120. At the maximum rotation speed of UF 120 and UF 140 fans Assassin is as efficient as Noctua NH-D14 SE2011. However, it could have been just fine, but the Noctua NH-D14 cooler came out in 2009, while Deepcool Assassin - in 2012…

During the maximum overclocking tests, Deepcool Assassin proved capable of ensuring stability for our processor overclocked to 4.5 GHz at 1.405 V core voltage and 80°C peak temperature:

This is very good result, even against the background of other super-coolers. However, we had expected the Assassin to do something more impressive.

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