The water block is pressed against the processor with a tension clip. Note that it is better to install the second fan onto the radiator after the mainboard has been successfully installed and the water block attached to it. It is attached with long screws and washers. There must be a spot for a 120 mm fan on the system case back panel in order to fit the system perfectly. However, you shouldn’t tighten these screws and install the mainboard into the system case until the water block is in place.īefore the mainboard goes in, you should arrange Antec KÜHLER H2O 92 system in the case. These plastic bushes are locked in the ends of the tension clip.After that you use screws that go through the PCB into the backplate to keep the tension clip in place. This helps keep the backplate in place on the back of the mainboard.Then you insert plastic bushes with holes in them into the ends of the tension clip.Antec KÜHLER H2O 920 comes with two types of bushes: green for AMD platforms and blue for Intel platforms. You need to insert special threaded bushes into the retention holes in the ends of the backplate and then put two pieces of double-sided tape on two of its sides. The first step during Antec KÜHLER H2O 920 installation is to prepare the backplate and tension clip. You can download the installation manual from Antec’s official web-site (PDF-file, 0.6 MB). Just like its predecessor, Antec KÜHLER H2O 920 is compatible with all contemporary platforms, but at the time of tests the system didn’t have LGA 2011 support yet, which could be nice to have, because the platform is already here and there are not that many cooling solutions for it yet. I have to add that the dual frictionless bearing in the fans has at least 50,000 MTBF. These numbers indicate that Antec KÜHLER H2O 920 will hardly be a quiet system. The maximum fan airflow is declared in the specs to be at 110 CFM, and the noise – at 43 dBA. The minimal fan speed should be 700 RPM and the rotation speed is PWM controlled. Moreover, they have higher maximum rotation speed of 2400 RPM (it was 2000 RPM by Antec KÜHLER H2O 620). The base is pretty well finished, even though it is not polished to mirror-chine.Compared with the 620 model, the new system not only has more fans, but each fan now has nine blades instead of seven. Here is a photo of the thermal paste imprint left by the processor heat-spreader on the water block base surface. The copper water block has multi-channel internal structure that consists of thin 6-7 mm tall ribs.There is a layer of thick gray thermal interface already pre-applied onto the water block base surface. The fittings on the pump can be rotated as needed, which makes it fairly easy to install the water block onto the processor and prevents the tubes from kinking. The pump noise is claimed to be between 26 and 37 dBA, and its maximum power consumption shouldn’t exceed 3.1 W. However, we know that it is built with a ceramic bearing that should last at least 50,000 hours. Moreover, there are threaded loops on each side of the radiator for attaching fans.The pump and water block form a single unit only 72x72x28 mm in size.īeneath the plastic cover there is a pump with unknown declared performance. ![]() Each tube is 11 m in external diameter and 330 mm long. Two fittings come out of the radiator and the flexible tubes are firmly pressed against them. It consists of 9 flat channels about 1.5-2 mm thick and corrugated band soldered to it creating 1.5 mm wide cells. Nevertheless, the 3-year warranty from Antec should protect the users from any possible problems like that. And no matter what type and quality of anti-corrosion additives the coolant has, copper and aluminum form a galvanic pair, which will eventually lead to inevitable corrosion. I am sure that it will affect not only the cooling efficiency of the system but also its life span, because the system does include a copper water block. Unfortunately, the major downside of the radiator still remains – the entire thing is made of solid aluminum. The key difference between Antec KÜHLER H2O 920 and the previous 620 model is the twice as thick radiator – 49 mm instead of 27 mm: It consists of a radiator with fans and a pump with the processor water block connected to the radiator with two flexible tubes: The system is pre-filled with the coolant and sealed. Antec KÜHLER H2O 920 is built on Asetek 570LC platform that is why there is nothing principally new about its structure:
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