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Item#: N82E16835146043

NZXT Kraken X31 120mm Closed Loop Liquid Cooler

  • 800-2000 RPM ± 10% 81.32 CFM (max.)
  • Fan Dim. 120x120x25mm
  • Fan Noise 18-34 dBA

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the NZXT RL-KRX31-01

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 6 years
  • Limited Warranty period (labor): 6 years
  • Read full details

Customer Reviews of the NZXT RL-KRX31-01

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  • Anonymous
  • 3/9/2016 5:29:47 PM

1 out of 5 eggsbroke within 3 months of use

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: Great design

Easy install

Worked really well before it broke 30c idle and 50-65c intesive

Cons: So just today my pump broke, I know this because the temps had gone up to 80c when watching a Youtube video. I then turn off my computer and reset the OC (4.0 ghz) and saved and exited. I then booted it back up after waiting an hour to let it cool down and started watching a youtube video again watching the temps go up 70c again.

Other Thoughts: I am quite mad right know and will be sending the cooler back to get it replaced, I believe I was sent a lemon but still am really upset.

Manufacturer Response:

Hello Valued NZXT Customer,

We appreciate the feedback on our Kraken X31 AIO Cooler and we deeply apologize if any parts come defective or do break over time. What we can tell you is that if any parts do break we would highly recommend contacting us. You can either visit support.nzxt.com which you would be able to submit a request which will enter into our ticketing system you will receive a response within 24-48 hours. If you have any issues or concerns please let us know, we can be reached at 1-800-228-9395.

Kind Regards,
NZXT Support.

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  • Knox H.
  • 2/7/2016 9:20:27 AM

5 out of 5 eggsExcellent buy for AMD 9370

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: - Super quiet
- great temperatures

Bought this to replace a fan that was cooling my AMD 9370 insufficiently. The 220W processor by default runs hot, so it needs special attention. After a very simple installation with graphic instructions provided online (no documentation), this boots and cools better than any device Ive ever had. Sitting chilly in the 0-15C range.

Cons: none yet

Other Thoughts: People who say they are hearing noises must have received a defective product. You cant even tell my machine is on.

Did you find this review helpful? Yes No

  • Anonymous
  • 2/5/2016 6:41:59 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsTerrible Product should be phased out

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: It is easy to install, and at high RPM it is silent minus the fan noise and pump noise associated with that high of a load.

Cons: You cannot run this product at any given ssetting other than a performance setting or a custom setting where the fan runs above 50%. Because at that percentage the pump RPM shoots up to 3000 rpm and this is where this pump is actually silent. Other than that it sounds like the oldest most over used hard drive that's on it last leg, writing non-stop data. I then rma'd it to the manufacturer they told me it was a known issue, and they would send me another tested one. I received a new unit that was never opened so I don't know how it could have been tested, and it made the same noises. For this price do not buy, you can get the same performance for less money and better quality out of a competitors product for 69.99-89.99 cad $. Go with that do no buy this...

Manufacturer Response:

Hello Valued NZXT Customer,

We appreciate the feedback on our Kraken X31 AIO Cooler and we deeply apologize if any parts come defective or do break over time. What we can tell you is that if any parts do break we would highly recommend contacting us. You can either visit support.nzxt.com which you would be able to submit a request which will enter into our ticketing system you will receive a response within 24-48 hours. If you have any issues or concerns please let us know, we can be reached at 1-800-228-9395.

Kind Regards,
NZXT Support.

1 out of 1 people found this review helpful. Did you? Yes No

  • Wesley W.
  • 10/19/2015 2:25:35 PM
  • Ownership: 1 month to 1 year

5 out of 5 eggsWorks Perect GPU cooler

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: Cheap liquid cooling. Fits a large variety of video cards. Closed loop no coolant handling. Easy to install.

Cons: Only cools the GPU itself liquid. Memory is air cooled.

Other Thoughts: One thing you have to do is use real thermal paste and be sure you use a high output fan plug for the pump. It's best to use an regular plug to three prong adapter so it relieves full power. Using you variable fan plugs on the MB will shorten it life. My R9 290X was running 80C under load stock fan/HS. Now I have over clocked the card and the temp has been running 55C during stress test. It works!

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 9/13/2015 8:42:44 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsgood good

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: No problems so far. Keeps temperatures low enough even with heavy OC under stress. Very impressive for the price.

Cons: Doesn't give Africa cool water like it does my cpu also CAM is a bit bloated but doesn't bother me

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  • Robert H.
  • 8/23/2015 12:56:29 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsworked good until it failed.

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: compatible with my older NZXT Whisper case, complete kit

Cons: didn't even make it 9 months until it failed. almost burned up my CPU.

Other Thoughts: first radiator fan stopped working, then (I am assuming) the internal pump failed because the CPU temp was at 90 deg F...

0 out of 6 people found this review helpful. Did you? Yes No

  • Gail S.
  • 8/20/2015 9:31:02 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsRe-review: Nice Hardware, Not Nice Software

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: Hardware is well made, easy to install, and works well when you set it up intelligently.

Cons: If you set up the cooler and software as instructed, you will have a bad experience. For one thing, the CAM software that comes with the Kraken X31 only works when you've logged onto Windows. This means you can't run tests like Memtest86, that run outside the Windows environment, without setting fire to your cpu. Not only that, but even when the CAM software is loaded, at least with my mobo and chip (AMD FX-8350 on an ASUS Crosshair V Formula-Z) it uses a wierd cpu temperature to base it's cooling on, one that doesn't match the cpu temperature info in the bios. This means allowing my cpu to run appr. 20C hotter than it should before it really starts kicking in.

Other Thoughts: If you want to spare yourself some pain, don't follow the instructions. Plug the pwm fan plug into the pwm cpu fan plug, and plug the three prong pump plug into the optional cpu fan plug, or another optional fan plug. Set up your cooling in the bios, and don't bother installing CAM.

3 out of 4 people found this review helpful. Did you? Yes No

  • Gail S.
  • 8/16/2015 3:59:02 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsRobust, fairly easy to install, and does the job.

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: The price is right. This does a very good job of cooling even overclocked processors. Because it doesn't have a massive radiator it should fit in less roomy cases without many issues. When your system isn't stressed it is whisper quiet. It is also fairly easy to install and the software displays a lot of useful information when you are working on overclocking and/or stabilizing your system under load.

Cons: When temperatures climb it can get pretty noisy. The CAM software that comes with the cooling system does the job as well, but it seems a bit bloated, and a bit flaky. It also doesn't remember where you put it on screen, and cannot be resized--small quibbles, but I appreciate software developers that pay attention to small details.

Other Thoughts: Don't forget to install the drivers and software, and if you want to get the most out of the system you will probably have to create a custom cooling profile.

1 out of 1 people found this review helpful. Did you? Yes No

  • JR (.
  • 2/2/2015 1:34:46 PM
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggswoks just great no issues here.

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: easy and simple to install. keeps my i3 temperatures below average (compared to the OEM heat sink and fan). overall recommended. not too loud.

Cons: doesn't have any lights on it. instructions suck, but does have animated online instructions. for the price tho!? meh.

Other Thoughts: if you have a NZXT case with the black and white color scheme, you'll like the way it looks. works like it needs to and stays cool.

1 out of 1 people found this review helpful. Did you? Yes No

  • Jared M.
  • 1/7/2015 1:42:53 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsSolid

This review is from: NZXT Kraken X31 120mm Closed Loop Liquid Cooler

Pros: Inexpensive liquid cooling solution
Good little unit so far
Easy Ish to install

Cons: CAM doesn't like AMD processors. But it's more accurate than many programs I've tried the past month.

Thermal Compound dried up within 5 weeks of hooking it up to the AMD A10-5800K Processor I got it, and actually began to cook it. Had the temp crested at 80c a couple times, but she never even seemed to notice.

I put some Tri-Linear Ceramic thermal compound on tonight and I already see a big change

Other Thoughts: I picked up a tube of Arctic Silver CMQ2-25G Céramique 2 Tri-Linear Ceramic Thermal Compound (Sold here at Newegg) during the build, not knowing if I'd need it. Turns out both the Processor and the Liquid cooler had it pre-applied.

I just figured out tonight, after some testing, that the compound that came on my NZXT cooler was already dried out completely to the processor and on the cooling block. I applied some of the compound and its looking better already.

When you get yours, PLEASE replace the thermal compound to protect your CPU/APU. The quality just wasn't there.

As far as installation, I'd prefer install instructions be fully disclosed in the box, rather than needing a PC to follow the instructions (Because I'm trying to BUILD one)

For intel users, You should be set with the pre-installed brackets, AMD users have to kinda work for it. There are 2 intel brackets by the way.. Watch yourself. If you have an Intel processor that doesn't fit the bracket pre-installed to the unit, get ready to work like the AMD users do to get it installed.

Took me about 45 minutes to install for a first-time computer builder. And 5 to replace the compound a month later.

1 out of 1 people found this review helpful. Did you? Yes No

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