The water pump and water block are integrated in the same casing. The block has Antec logo and a text Kühler H2O 620 printed on it and is connected to radiator with two silicon tubes.
Antec Kühler H2O 620 V4 comes with a pre-applied thermal paste in it. The amount of the paste is ideal and Antec’s pastes have generally been quite of high quality so there is no need to replace it with your own. Also, the surface of H20 620 V4 seems to be quite straight which is a good sign.
Installation of H2O 620 V4 was advertised to be an easy process. However, you need to remove your motherboard in order to install it. The installation is identical to the installation of the H2O 920.
The radiator is secured to the case using four screws. I found it odd that the fan is in pull configuration by default (as stated in the manual). After the radiator is secured, just plug in the fan in to the water block and connect the water block to motherboard using a standard fan-connector. Here we can also see the system installed in a motherboard and inside a case. Admittedly, liquid cooling does give you extra space inside a case and hot air is directed out from the case much more efficiently than with air cooling. Unfortunately though the 620-series do not have the fancy fan configuration utility like the 920 series has. Instead of this the fan is voltage and temperature configured from bios.