Conclusion: 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.
Conclusion: The Kühler H20 620 and 920 are a solid entrance to the closed loop water cooling market. Both units are very well put together, easy to install and also offer good performance. The top of the range 920 also offers some neat tricks in the form of the ChillControl V. The 620, on the other hand, comes at a very reasonable price tag, which should make it a tempting choice for anyone looking for a new cooler.
Pros: Plenty of space around CPU-socket – no compatibility issues, Flexible tubing, Easy installation, Value for money, Plenty of space around CPU-socket – no compatibility issues, Flexible tubing, Easy installation, ChillControl V, Performance
Conclusion: This is an excellent cpu cooler that is easy to install. In the past watercooling has been something for the more advanced user but with these watercooling kits even beginners and normal users can take advantage of the features of watercooling. There is always a risk with watercooling since it can leak but this kit has proven to be very high quality. We have been throwing around with it and pulling and yanking the tubing without any issues so far.
Summary: Antec KÜHLER H2O 920 CPU Cooler is the KÜHLER H2O 620's bigger brother! The KÜHLER H2O 920 is similar to the 620, but has a thicker radiator, extra 120mm fan, RGB LED and Chill Control software. If you're in the market for a CPU cooler, this is one of the best options out there.
Summary: The Antec KÜHLER H2O 620 CPU Cooler is an advanced liquid cooler. It's not an air cooler nor is it a custom water cooling setup, instead it offers the best of both works. It's easy to install, is compact, quiet, performs very well and is affordable. If you're intimated by custom water cooling, this would be a perfect solution.
Summary: Antec has brought another compact water cooling system to the market, the Kühler H2O 920, which comes with a bigger radiator, more powerful PWM fans in a push-pull configuration, a multicolored LED and software customization through ChillControl V.
Conclusion: Final ThoughtsSimply put, the cooling that can be achieved with this cooler cannot be beaten by any air-based cooler out on the market currently. That said, the downside to this extreme cooling is the noise and while this cooler will run whisper quiet it is pretty loud and very obtrusive when running flat out.
Pros: Superior Cooling, Can be whisper quiet, Fully-contained and no maintenance, Easy to install with good installation guide
Cons: In extreme mode it is loud!, Not exactly cheap
Summary: The Antec Kühler H
O 920 is simply stunning. It is smart, beautiful and has an unbelievable cooling performance, beating all its competitors we tested so far.
Even presenting a high noise level when the fans are at maximum speed, the application that comes with this cooler is intuitive. You can easily find your perfect balance between performance and silence, while allowing the cooler to adapt itself to the CPU load.
Conclusion: I have to say the cooling performance of the Antec Kulher H2O 620 was a lot better than I expected. During our full load CPU tests, the temperatures reached a respectable 42 degrees Celsius, which is just as good as any high performance air-cooler. You're probaby thinking ... so what's the big fuss about the Antec Kuhler H2O 620, if the temperatures are only comparable any high performance air-cooler. Well, we're not quite finished.
Excerpt: Antec's Kuhler H2O 920 is a very worthy successor to their very capable 620 kit. With its larger radiator and dual high-speed fans, the 920 can exhibit some excellent cooling performance, but the user will pay a significant noise penalty for that performance. Fortunately, this kit includes fan control functionality, thanks to the excellent ChillControl V software that allows the fan speed and cooling performance to be configured easily from the desktop.