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Cooling Efficiency

The results of our cooling efficiency tests on Evercool Silent Shark and its competitor in an LGA 2011 platform are given in the following table and diagram:

Frankly speaking we didn’t expect Evercool Silent Shark to do so well: at maximum and average speeds of its two fans it competed successfully against the Phanteks PH-TC14PE! Of course, Evercool Silent Shark has a dual-array aluminum heatsink with larger effective surface, six copper heatpipes 6 mm in diameter, two fans, highly reliable retention with high pressure hold, but we have already tested a variety of coolers that had all of the above, and none of them could be considered a worthy opponent to Phanteks. Here, on the contrary, we see very good cooling efficiency in the nominal operational mode.

At the maximum speed of its default fans Silent Shark is only 1?C behind PH-TC14PE, at the medium speed of 1640/1670 RPM the difference is the same 1?C, though the Phanteks cooler works at only 800 RPM in this case/. If we look at the lower fan speeds, Evercool Silent Shark loses very little efficiency, about a degree per increment of the central fan speed. And the reason for that is the exterior fan, which rotation speed cannot be adjusted.

If we equip the Evercool Silent Shark heatsink with two identical Corsair fans, which can be adjusted in sync, we will see a more vivid dependence of the heatsink efficiency on the fans speed. It would even be fair to call it linear, because every time the fan rotation speed is lowered by 200 RPM (except for the first 600 RPM), the CPU temperature increases by 3?C, and at 800 RPM the cooler could no longer bear the load that is why the maximum temperature value is crossed out. Overall, we cannot claim that using two alternative fans helps improve the cooling efficiency of Evercool Silent Shark. It is possible that if we could install a 140 mm fan instead of a 120 mm one, we could have won a few degrees, but the plastic fan mounts of the Evercool Silent Shark cooler do not allow that.

Now let’s add the obtained results to summary table and diagram, where all coolers are tested in their default configurations in quiet mode and at maximum fan rotation speed. The processor in this case was overclocked to 4,375 MHz with the Vcore set at 1.385 V:

* - 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.

At the maximum rotation speed of the two default fans, Evercool Silent Shark loses only to four top air super-coolers. This is a great result, even though in terms of acoustics, Silent Shark managed only to outperform SilverStone Heligon HE01. In relatively quiet mode when the central fan rotates at 820 RPM, Evercool Silent Shark stays in the leading group and outperforms such powerful competitors as Thermalright Macho or Archon. However, it is important to keep in mind that the exterior fan of the Evercool Silent Shark cooler doesn’t support fan rotation speed adjustment that is why it will always spin at 1600 RPM (1400 RPM ±15%), according to its official technical specifications.

After this test we decided to check out what Evercool Silent Shark was capable of at even higher CPU clock. Unfortunately, none of our numerous attempts engaging difference Vcore settings succeeded. Each test ended up in an error.

As a result, Evercool Silent Shark cooler took the leading spot in our summary table and diagram for maximum CPU overclocking, but only in the junior group:


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