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CPU Cooler

NZXT - Kraken X31 69.5 CFM Liquid CPU Cooler

( 4.5 Average / 22 Ratings )





Kraken X31

Part #


Supported Sockets


Liquid Cooled


Radiator Size


Noise Level

18 dB - 34 dB


800 - 2000 RPM

Completed Builds Using This Part

See All Completed Builds


Prices for this part are not available.

Price History (Excluding Tax) History:


markov52 8 points 45 months ago
from completed build Parallel Computing

I had a little bit of trouble fitting this into the 'Aerocool StrikeX-GT' case. But it was all well worth it. It runs very quietly, and keeps the cpu temperature around 60 C when under heavy load.

gnarlycharlie4u 20 points 43 months ago
from completed build Get Better Gaming Rig

Decent cooler. The variable speed pump and fan are a nice touch. I would not recommend for hotter products such as AMD FX9590. It will not sufficiently cool my R9 290x, even at stock clocks the GPU reached temps in excess of 93C after less than an hour of gaming.

aldorasha 34 points 43 months ago
from completed build AMD Noctis [First Time]

Quiet when idle, very effective when performance is needed. One of the first fully closed loop water coolers and the first with a variable cooler. The radiator is only 120mm yet it's one of the best coolers you can buy, anything better than this is slight overkill. It's price is very reasonable. The NZXT Kraken series has to be one of the best on the market.

bmccarthy8989 53 points 42 months ago
from completed build Skyline

I gave this 3 stars for a few reasons. First I would like to say that this thing performs very well. Especially considering its price range and it being a single 120 x 120 mm radiator. However, it's pump is very loud. It is literally the only thing I can hear coming from the case. It has got a little better after running, (air not being circulated through the pump). The second thing would be that the pump top does not include the LED feature, which apparently only comes with the other Kraken models. Overall it is not a bad buy as it does perform well, but as I was going for a silent build, so it will not receive high marks from me. So if you don't care about noise it is a good purchase.

SwankyTunez 13 points 38 months ago


dOnuT_NOA 8 points 38 months ago
from completed build The Refrigerator

Easy install but instructions are a lot better on the website.

danimsmba 10 points 37 months ago
from completed build Gemini SAGA

This bad boy is possibly the best bang-for-buck AIO. It was a breeze to install and works like a charm. keeps the cpu cooled. The CAM software from NZXT makes a really good product even better.

mbrown64 24 points 34 months ago

Its keeping the CPU cool enough (although I'm yet to push it really hard, so we'll see). The pump itself is quiet most of the time but does rattle occasionally. Replaced the fan with the Corsair AF120 White for looks. Probably mistake as its a tad noisy. CAM software is pretty but not amazingly functional.

[EDIT: Put the stock fan back in. CAM software now able to regulate fan speed properly - much quieter. The Corsair was running at ~ 1500 rpm regardless of configuration in either CAM or BIOS Also bit of a noob mistake as the Corsair is AF not SP.]

senseirulez 15 points 30 months ago

I was thinking of buying CM EVO 212 but with some research I learned that air cooler might not be enough for k series CPUs sometimes.Corsair product reviews was terrible and with my NZXT case I thought it would be good combination.It does its job,my cpu's idle temp is 25C and never goes above 55C at load.NZXT provides great control over your system and cpu cooler via CAM software so you can customize its rpm's and performance.

danielj 4 points 30 months ago
from completed build The Dark Knugget (first build)

great cooler to look at, and does the job oh-so-well... only giving 4 stars as i had issues with the drivers not being recognised/installing on first boot up. also support from nzxt was a little slow, but workaround worked a treat. Chose this over everything else as it just seemed performance and value for money were 2nd to none.. very happy in the end.