Antec Kühler H2O 620 v4


Following system was used during our test session:

Intel Core I5-2500K
Asus P8P67
4x2GB DDR 1600MHz
Verbatim SATA-III 120GB SSD
Asus Radeon 6850
Antec P280 case
Enermax ENM750AWT PSU

Just to make it clear. The system in the pictures on last page was different than the system we used in test sessions. During the tests ambient temperature was around 23 celsius (~75F).


Antec Kühler H20 620 V4

Performance wise 620 can’t compete with the 920 that has a radiator twice the size of 620’s. There’s a significant difference in load temperatures between the two Antec Kühlers. In idle temperatures the difference is minimal. 620 V4 has a slight benefit over the older version. V4’s load temperature is 35,4c while the older version has it around 36,2c. The 920 beats them both with a load temperature of 31,4. Tthe noise level difference between the 620 and 920 minimal in both load and idle. The test software we used was Superpi 32M test. The temperatures will rise a lot if you stress your processor more, but the order of the coolers should not change. 920 is the best, then comes 620 V4 and then the 620. The fan of 620 V4 makes some slight “ticking” noise which is not at all that uncommon with various fans around the market, but in a completely silent environment it can be a bit annoying.


The new version of Antec Kühler H2O 620 seems to provide some improvement against the older version in terms of noise. Unfortunately, we did not have the old version to compare it against in the performance tests. Having said this though, the pump in the 920 is the same and the noise level is definitely lower in the V4. Performance is good and the H2O 620 V4 is able to cool down our I5-2500k without a problem even with slight overclock in the processor. The Antec Kühler H2O 620 V4 is priced around 60€ here in Finland, which makes it pricewise on par with higher end air coolers. Water coolers offer some benefits over air coolers in terms of getting the hot air out of the case and the performance and noise levels are on par with the high end air coolers. Therefore, I see no reason why one shouldn’t buy Antec Kühler H2O V4 in case they are looking for a good processor cooler and have 60€ to spend on it.


– No fancy fan configuration utility like with 920

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