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Kraken X31

Title: Matte Black


$ 7999

Product overview

  • Full software control using our clean, feature-packed NZXT CAM software suite.
  • Our 120mm radiator platform keeps your CPU or GPU extremely cool and quiet.
  • The 120mm standard allows us to maximize compatibility among PC cases.
  • Unique variable speed pump for quiet use without sacrificing power.
  • High performance copper coldplate.
  • New FX120 V2 performance watercooling PWM fan tuned for radiator cooling.
  • Large tower support with extended 16” tubing and pre-installed Intel mounting for easy use.
  • Completely sealed system backed by an industry leading 6 year warranty.
Model NumberRL-KRX31-01
Fan Air Flow81.32 CFM (max.)
Fan Air Pressure0.44 - 2.76 mmH20
Fan BearingHydro Dynamic Bearing
Motor Speed2400-3600 ± 150 RPM
Fan Connector4-Pin PWM
Motor Voltage12V DC
Motor Connector3-Pin
CompatibilityIntel LGA 2011-3, 1366, 115X CPUs
AMD FM2, FM1, AM3+, AM3, AM2+, AM2 CPUs
Fan Dimensions120x120x25mm
Motor Current325mA
Radiator Dimensions155 x 120 x 30 mm
Fan Noise Level18-34 dBA
Tube Length400mm
Fan Speed800-2000 RPM ± 10%
Fan Voltage12V DC
Kraken+ Software Module
Warranty6 Years

by Overclocker's Club (OCC)Small overclockersclub

For the $79.99 price tag, I think you get a lot of bang-for-the-buck. You get an All-in-One liquid cooler that can handle the heat of overclocking and, being an AIO, you get the space savings of a small, compact pump and remote mount radiator. No problems more..

by Pure OverclockSmall pureoverclock

The X41 in my opinion held its own against the X61 and both performed well beyond my expectations. The X41 is easily a top competitor to other units on the market today. The X31 for its size did very well on its own, and I am nitpicking here but I would h more..

by goldfriesSmall goldfries

The cooler retails at around RM 250, it doesn't perform as great as the 140mm models BUT it's cheap. You still get the useful controls from NZXT's top-notched software, minus the colored LED on the pump. The best thing about the X31 is that it comes with more..

by Back2GamingSmall back2gaming

The NZXT Kraken X31, as with many of NZXT's products, have a certain touch of quality that's hard to point out but you can feel it in the product. Performance is acceptable for a 120mm model and given the ability to control the fan and monitor performance more..

by TECHPORNSmall techporn

The NZXT KRAKEN X31 is a good cooler. It might be bland in the aesthetics department, but it sure is decent and has features worthy to look at. The 16 Incher tubings might not be my favorite, but it is a welcome approach especially if you're looking forwa more..

by TweakTownSmall tweaktown

Priced fairly for the level of performance delivered with the Kraken X31, we still feel that the CAM software should and likely will make you chose this sealed AIO over many of the others out there. more..

by Hi Tech LegionSmall hitechlegion

For a single 120mm CLC (closed loop cooler) to be still packed full of features, we can see that NZXT has taken their water cooling units seriously, and are looking to offer users the most features for their dollar. more..

by Think ComputersSmall thinkcomputers

There is plenty to love about the X31. more..

by Hardware CanucksSmall hardwarecanucks

The NZXT Kraken X31 offers a phenomenal price / performance ratio, a novice-friendly installation procedure, broad compatibility and loads of features not normally seen on an entry-level AIO. more..

by ocaholic

Cooling performance in combination with the 120mm PWM fan included in deliver is good. more..

by NeoSeekerSmall neoseeker

At a retail cost of only $79.99 the Kraken X31 is sure to be a hit with anyone needing an AIO liquid cooling system. more..

by TweakTownSmall tweaktown

Priced fairly for the level of performance delivered with the Kraken X31, we still feel that the CAM software should and likely will make you chose this sealed AIO over many of the others out there. more..

Hi Tech Legion's Video Review

Kraken X31 ManualView Details
Kraken Series Compatibility Guide 10.22.2014PDF109 KBDownload


The Kraken X31 is one of the first consumer closed loop coolers with an integrated variable speed pump. The state-of-the-art variable speed pump keeps your PC’s noise to a minimum during use without sacrificing top end pump power.

Kraken x31 images 01


The Kraken X31 utilizes a 120mm radiator platform to deliver the widest range of compatibility of any of our Kraken liquid coolers, making it compatible with any NZXT case available today and nearly all of our competitor’s.

Kraken x31 images 02


Kraken allows you to control the X31’s fans and other cooling settings easily from the comfort of NZXT’s CAM desktop or mobile software suite.



Large tower support with extended 16” tubing, pre-set Intel mounting, and premium sleeved cables make installation and cable management in your PC a breeze.

Kraken x31 images 04


Build with confidence, the Kraken all-in-one sealed system is backed by an industry leading six-year warranty.

Kraken x61 images 05


Hi Tech Legion Editor's Choice Gold
NeoSeeker Recommended
OCC Gold
Think Computer 8 / 10 Rating
TweakTown Best Features
Pure Overclock Great Hardware
Hardware Canucks Dam Good Value
Ocaholic 4/5 Stars
Back2Gaming Silver
goldfries Recommended Hardware

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