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NZXT Kraken X40 Liquid Cooler Review
NZXT Kraken X40 Liquid Cooler Review
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Abstract: UPDATED! The NZXT Kraken X40 is a small self contained CPU liquid cooling system based on the exceptionally popular Asetek platform. As with most all-in-one liquid coolers, the Kraken X40 is differentiated from its sister model - the Kraken X60 - by its thinner 140mm-sized aluminum heat exchanger.

 Manufacturer  Category  Published  Author 
NZXT   Cooling / Heatsinks   Dec 29, 2013   Max Page  

Home > Reviews > Page: Intel LGA2011 Heatsink Temperature Comparisons

FrostyTech Mk.III Synthetic Thermal Heatsink Test Results
Intel Core i7, Extreme Edition class heatsinks tested at a 200W heat load.
Results based on readings from a 38x38mm copper interface die with 200W heat load on the Intel version of the Mk.III Test Platform. Temperature results listed for each heatsink were calculated by determining the rise over ambient temperatures at time of test. Information on Frostytech's test methodology is available here.
Socket LGA2011/1366 compatible CPU heatsinks
Manufacturer: Model No.: *Fan Speed: 200W Thermal Test (°C) Noise Level (dBA)

Coolermaster Nepton 280L high 10.6 58.8
Coolermaster Nepton 140XL high 11.8 59.6
Coolermaster Seidon 240M high 13.4 55.6
Silverstone Tundra TD02 high 13.6 53.0
Coolermaster Glacer 240L high 14.1 52.5
NZXT Kraken X60 high 14.5 60.7
Noctua NH-D15 high 15.8 49.8
Noctua NH-U14S 17.0 47.3
Coolermaster Seidon 120V high 17.5 54.3
NZXT Kraken X40 high 18.2 59.4
Silverstone Tundra TD03 high 18.7 58.1
Silverstone Argon AR01 high 18.8 53.0
X2 Products Eclipse IV high 19.1 57.4
Coolermaster Eisberg 240L high 19.1 50.5
BeQuiet Dark Rock Pro 3 high 19.5 43.7
Raijintek Themis high 19.7 52.8
Coolermaster V8 GTS high 20.0 59.7
BeQuiet Dark Rock 3 high 20.9 41.8
Corsair Hydro H80i high 21.1 64.0
Noctua NH-U12S 21.1 46.2
Raijintek Ereboss high 21.4 49.7
Zalman Reserator 3 Max high 21.6 58.9
Scythe Mugen 4 high 21.7 41.9
Zalman LQ315 high 21.9 50.8
Silverstone NT06-P high 22.1 51.6
Raijintek Pallas high 22.2 43.2
Raijintek Aidos high 23.0 55.6
Silentium Fera2 HE1224 high 23.4 37.6
Zalman LQ310 high 23.8 52.7
Scythe Ashura Shadow (SCASR-1000SE) high 24.2 51.4
Raijintek Nemesis high 24.6 47.8
BeQuiet Shadow Rock Slim high 24.7 40.4
BeQuiet Shadow Rock 2 high 24.9 43.3
NZXT Kraken X40 low 25.3 38.6
Zalman LQ320 high 25.5 50.2
npowertek NPH-1366-115HC (LGA1366) high 28.7 44.8
Dynatron G556 (LGA1366/2U) 29.1 68.4
Dynatron G555 (LGA1366/2U) 30.4 67.8
Dynatron G666 (LGA1366/2U) 31.8 68.7
Silverstone NT01-Pro high 35.8 40.4
nPowerTek NPH1366-140HC (LGA1366) high 36.3 48.1
Zalman FX-100 (w/h ZM-F2 fan) 36.9 28.5
Dynatron G199 (LGA1366/1U) 47.6 62.6
Zalman FX-100 (hor, ver) 63.0 0.0
200W Thermal Test (°C) Noise Level (dBA)
*Heatsinks are ranked according to the 200W Thermal Test results column (rise over ambient temp.). Low temperatures with low noise levels are considered best. For reference heatsinks with variable-speed fans, only the high speed (12V) fan test result is included in the comparison sheet; more detailed results reside in each specific heatsink review.

Frostytech's socket LGA2011 Intel synthetic thermal test platform stresses socket LGA2011/1366 compatible heatsinks with a 200W heat load. Keep in mind that the AMD Integrated Heat Spreader and Intel LGA2011 Integrated Heat Spreader both measure ~38x38mm, so these test results can be extrapolated to AMD processor scenario's as well.

With a 200W heat load applied by the Intel LGA2011/1366 version of FrostyTech's synthetic thermal test platform, the NZXT Kraken X40 liquid cooling solution yielded an excellent temperature result of 18.2°C over ambient at stock fan speed (59.4dBA noise).

Reducing the speed of the Kraken X40's single 140mm PWM fan to 800RPM saw the synthetic copper CPU die to rise to 25.3°C over ambient while noise output fell to a very quiet 38.6 dBA. All in all, pretty good to average results on this 200W thermal test platform!

If you've been following the self contained liquid CPU coolers since they first emerged on the market, you'll recall these heatsinks were originally released in 120mm fan versions. Shortly after, the 120mm versions were supplanted by 140mm units like the Kraken X40 Frostytech just testing. The CPU cooling industry is nothing if it isn't innovative and now there are single 140mm fan equipped liquid coolers like the Kraken, but with larger diameter tubing so the rate of coolant flow has been increased.... A good example would be the Coolermaster Nepton 140XL which outperforms the Kraken X40 by 6.5°C thanks in part to larger tubing and a second fan. Still, compared to the other all-in-one liquid coolers based on the popular Asetek infrastructure, the NZXT Kraken X40 liquid cooling solution performs favorably, but a little on the loud side at stock fan speed.

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 Previous Page °
Heat Sink Review Index  

Table of Contents:

 1:  NZXT Kraken X40 Liquid Cooler Review
 2:  360° View - NZXT Kraken X40
 3:  Heatsink Acoustic Measurements
 4:  AMD Heatsink Temperature Comparisons
 5:  Intel LGA115x/775 Heatsink Temperature Comparisons
 6: — Intel LGA2011 Heatsink Temperature Comparisons

List all NZXT heat sinks that Frostytech tested?

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