NZXT was established in 2004 and bring to market several cases, coolers, case accessories and power supplies. The products are designed in the USA by a very small team that punches a lot above their weight, and manufacturing is done in Asia as is the case with most companies in this field. My primary interest in the NZXT peaked as a result of their Kraken G10 GPU bracket announced last year. I had an AMD Radeon R9 290 and wanted to make a “Cooling Hawaii” roundup. NZXT, especially Mitchell, was gracious enough to send a G10 bracket as well as Kraken x41 to use with it. Now anyone familiar with AIOs knows they usually come with pre-attached TIM on the cold plate, and that poses an issue for me who does multiple runs to be statistically accurate. The applied TIM is also meant to be used on a CPU IHS, rather than a bare GPU die. So I decided to test out the x41 as a CPU cooler first before using it in conjunction with the G10 as a GPU cooler.

Let’s take a look at the specs list courtesy the product page:

Model Number RL-KRX41-01
Fan Air Flow 42.4-106.1 CFM
Fan Air Pressure 0.36-1.97mmH2O
Fan Bearing Nano Bearing
Motor Speed 2400-3600 ± 150 RPM
Fan Connector 4 Pin PWM
Motor Voltage 12V
Motor Connector 3 Pin
Compatibility Intel LGA 2011-3, 1366, 1156, 1155, 1150 CPUs
AMD FM2, FM1, AM3+, AM3, AM2+, AM2 CPUs
Fan Dimensions 140 x 140 x 25mm
Motor Current 325mA
Radiator Dimensions 140 x 172.5 x 36mm
Fan Model NZXT FX V2 140mm Performance PWM Fan
Fan Noise Level 20-37 dBA
Material Copper
Tube Length 400mm
LED Color Hue Controlled Color Changing Lights
Fan Speed 800~2000 RPM ± 10%
Fan Voltage 12 VDC
UPC 15671011947
EAN 5060301691197
Control Method Kraken+ Software Module
Warranty 6 Years

NZXT puts forward the USP of their updated Kraken AIO series being the variable speed pumps. The x41 radiator unit is also 24% thicker than its predecessor, the x40. But without having the x40 to check out personally, I can’t say if anything else was changed in the radiator unit other than just thickness. So let’s now take a look at the cooler itself.

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