NZXT Kraken X41 CPU Cooler Review


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NZXT Kraken X41 CPU Cooler: Performance Test 1

Our first CPU Cooler Performance Test takes use of the included TIM and fans included with each CPU cooler. The NZXT Kraken X41 includes only one fan for a push setup and with pre-applied TIM which can only be used once. The purpose of this test is NOT to prove which cooler is better, but rather to give our readers an expectation of what to expect from each cooler using the stock fans and TIM.


NZXT FX V2 140mm Performance PWM Fan Specifications

Courtesy of NZXT.com

Dimensions 140 x 140 x 27 mm (W x H x D)
Fan Air Flow 42.4-106.1 CFM
Fan Air Pressure 0.36-1.97 mm-H2O
Fan Bearing ENB (Everflow Nano Bearing)
Fan Connector 4-Pin
Fan Control Pulse Width Modulation (PWM)
Fan Input Power 7.2 W
Fan Current 0.6 A
Fan Noise Level 20-37 dBA
Fan Speed 800~2000 R.P.M.
Fan Voltage 12 VDC

Test 1 Results


The NZXT FX V2 140 mm fans have a measured RPM rating from 800 to 2000, although being limited to the Asus AI suite, our Gryphon Z87 motherboard only managed a minimum of 1100 rpm. The NZXT Kraken X41 outperforms literally every other cooler in this test at it’s maximum RPM, which is really impressive considering this is a 140 mm cooler.


Raising the CPU core of our I5 4670k to 4.2 GHz requires increasing the core voltage to 1.175 V. In our overclocked test the NZXT Kraken X41 still keeps our I5 4670k under control averaging 58.8 degrees Celsius. During this second run, we see other coolers take the lead. Compared to the Silverstone TD03-E, the Kraken X41 is beaten by it’s lack of a second fan, yet it sill maintains some really respectable temperatures across the RPM spectrum.


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  1. Neil Mathieson

    Some of your charts are showing Kraken X61 results. Isn’t this an X41 review?

    1. Julian Duque

      Thank you for bringing this up. This was a typo and it has since been corrected. If you are looking for our Kraken X61 review stay tuned as it will soon be released!

      1. Neil Mathieson

        Nope, just pointing it out to you. X61 sounds like a good one. It’s good to know that the X41 is good enough for my PCs.

        I have the X41 here, but never used it. I have a pair of Noctua 140mm fans to use with it, or a pair of Cougar Vortex 140mm fans.

        I can put it into one of three builds and haven’t made up my mind yet.

  2. John D

    I read the text and on pages 5 and 6 x61 is used 5times and x41 is in the same paragraphs making it extremely confusing. I just got to the end to read that you corrected the x61 mistakes but , not where I just got through reading. I dont know if you had intermixed the x41//61 on the graphs , too, or if the text errors were separate
    I was confused as to just which Krakens were actually tested

    1. Julian Duque

      Thanks for pointing this out. The typos have been corrected! These review is completely of the NZXT X41, our review of the NZXT X61 should be coming some time this week.

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