NZXT Kraken X63 Liquid CPU Cooler Review


Changes to our AIO cooler test system have recently been made, so we are starting fresh with our testing method and results. The following components are used in our new test rig.

CPU: AMD Ryzen 7 1800X
Cooling: NZXT Kraken X63
Motherboard: ASUS Crosshair VI Hero
Graphics Card: PowerColor Red Devil Radeon RX 580
Memory: HyperX Savage DDR4-2666 16GB
Storage: Corsair Force MP500 M.2 PCIe NVMe SSD
Case: Fractal Design Define R6 Tempered Glass
Power: SilverStone SST-ST55F-G

As our testbed is brand new, the list of coolers we will be comparing is currently quite small, but will be growing in the near future.

– Cryorig H5 Universal
SilverStone PF240-ARGB
ARCTIC Liquid Freezer II 240
Corsair iCUE H115i RGB PRO XT
Alphacool Eisbaer Aurora 360 CPU
– NZXT Kraken X63

For performance testing we will first test idle temperatures. These are taken on the Windows 10 desktop an hour after the system has been turned on.


For load testing we will be running the AIDA64 system stability test with the CPU only checked. This puts a full load on our CPU. We run this test for 1 hour and record the highest temperature throughout the test.



The Kraken X63 is fully compatible with NZXT’s CAM software, and below you will find a quick overview of the options available for controlling the AIO.

Under the “Cooling” section of CAM is where you can adjust the Kraken X63’s profile. A Silent and Performance option are both available by default, but custom settings can be created and saved to fit your performance and volume needs. With just the pump being controlled by CAM, any fan control adjustments will need to be made via your motherboard’s software or fan controller, depending on how your system is configured.

CAM 01

The “Lighting” section of CAM is home to the RGB lighting options for the X63. Both the LED light ring and NZXT logo can be adjusted independently, and each can be configured with various static or animated lighting effects.

CAM 02

Below are a few examples of the lighting options available for the Kraken X63 within CAM.

NZXT Kraken X63

NZXT Kraken X63

NZXT Kraken X63

NZXT Kraken X63