Articles: Cooling

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Cooling Efficiency

The results of our cooling efficiency tests are given on the following diagram and in the following table:

Phanteks PH-TC14PE super-cooler has never been a “whipping boy” and looked quite worthy even facing a strong competitor like Swiftech H2O-220/230 Edge HD liquid-cooling system. But today is totally different. EK-Supremacy KIT H3O HFX is 10-11°C better than the best super-cooler making the distinction between superb liquid-cooling and exceptional air-cooling perfectly clear. At the same time, we understand that our six-core processor overclocked to 4375 MHz doesn’t allow the EKWB system to fully unwrap its potential. That is why we overclocked our CPU a little more – to 4500 MHz at 1.415 V Vcore and performed another round of comparative tests. Let’s take another look at the results in the following diagram and table:

The temperature difference between the EKWB system and the best super-cooler increased by another 1-2°C and EK-Supremacy KIT H3O HFX again demonstrated unprecedented performance in all fan modes. We can only admire a system with such high potential. But, trust me, this isn’t all. In the meanwhile, let’s add the new results into our summary table and diagram, where each cooler and liquid-cooling system were tested in their default configurations in quiet mode and at the maximum speed of the fan(s) with the CPU overclocked to 4.375 MHz at 1.385 V Vcore.

* - 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.

EK-Supremacy KIT H3O HFX system took over the top two lines having yielded less than 1°C to Swiftech H2O-320 Edge HD liquid-cooling system. The latter, however, wins only due to higher rotation speed of its cooling fans (2110 RPM vs. 1460 RPM by EKWB). In other words, Swiftech generates more noise. In quiet mode EKWB kit is an absolute and undefeated leader.

As for the maximum CPU overclocking results obtained using EK-Supremacy KIT H3O HFX system, we were able to maintain complete stability of our six-core processor at 4625 MHz frequency and 1.47 V Vcore. This is true for both: the maximum fan rotation speed as well as quiet mode at 600 RPM:

3 x 600 RPM

3 x 1460 RPM

Note that at 600 RPM the peak temperature of the hottest processor core reached only 69°C and at the maximum 1460 RPM of the EKWB’s fan – only 64°C. I have to admit: EK-Supremacy KIT H3O HFX continues to amaze us with its unprecedented cooling potential.

But again, this isn’t all. We decided to go all in and squeeze a few additional megahertz out of our processor, and… we did! Although we could only maintain stability at 1.515 V core voltage, which we normally do not recommend, but we managed to push our processor to 4750 MHz with only 69°C peak temperature:

3 x 1460 RPM

Now we should add the results of EK-Supremacy KIT H3O HFX to our overall rating chart for maximum processor overclocking:

No comments are necessary: absolute and undeniable total victory! Now let’s check out the acoustic performance of this system.

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