Antec KÜHLER H2O 620 CPU cooler Review

👤by Sahil Mannick Comments 📅16-08-11
Results Overclocked (In-depth analysis)

In the next comparison, we look at the default cooler performance as they come out of the box with their bundled fans. Coolers that come with no fans have been coupled with Noctua’s NF-P12 or fans that the manufacturers intended their coolers to be used with.


We see that the KÜHLER H2O 620 performs better than the CoolIT Eco here but not quite as well as the Corsair H50 with its pre-applied thermal paste. Unfortunately we didn’t manage to test the KÜHLER H2O 620 using its pre-applied thermal paste which is in fact the same Shin-Etsu compound used by the H50. If we consider the H50 results using our standard ChillFactor II thermal paste, we see it lagging behind the Antec unit. Compared to air coolers, the Antec unit just can’t compare to the higher end offerings. The KÜHLER H2O 920 is in a clear league ahead here thanks to its two fans and larger radiator.


With two Noctua fans, the intake orientation beats the Corsair and the CoolIT whereas in the exhaust orientation, the Antec only beats the CoolIT. Overall performance is still not good enough to compare against similarly priced air coolers.


With two Coolink fans, the Antec’s efficiency doesn’t appear to match its competition be they ALC units or air coolers.


The results here can be quite hard to decipher. In its default configuration, the Antec starts off well. This may be due to its higher RPM fan. Even with the NF-P12s, it compared very well against the other ALC units apart from the 920. However, the KÜHLER H2O 620 doesn’t seem to work as well as the other two units when coupled with the SWiF2-120P. Another observation is that the intake orientation performs worse in this case when the opposite is true with the Corsair and CoolIT units.

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