Alpenföhn K2 CPU Cooler Review

👤by Sahil Mannick Comments 📅30-11-11
Features and Specifications

Twin tower with 8x6mm Heat pipes:
The new Twin Tower Design can reach best results in noise and performance by using a combination of 2 fans. The trapezoid fin shape ensures better compatibility with VGA coolers by keeping the distance to the PCI-X slot. All contact surfaces between fins, heat pipes and the base plate are soldered.

Wing Boost 120/140mm Dual Combination:
Equipped with integrated decoupling elements, WB technology and HD bearing, the K2 comes with each one 120mm and 140mm Wing Boost fans.

The K2 is the first cooler to feature the brand new Minimised noise Transfer at Low Airflow Technology (MnTal). The advanced fin structure influences the airflow through the heatsink to increase the heat transfer.

Heat pipes/Base plate:
The U-Shape heat pipes offer a large connection area to the base plate for a better heat absorption. By CNC machining the surface of the base plate it is perfectly even and the thermal transfer is optimised.


•Cooler dimensions : 154x144x160mm (LxWxH)
•Cooler weight: 1378g (With 2 fans) / 1050g (With no fans)
•Heat pipe: 6mm x8 units
•Cooler material: full copper heat pipes and base, aluminium fins
•Compatibility: Intel Socket LGA1155, 1156, LGA1366, LGA775 (LGA2011 mounting kit provided free on request), and AMD AM2/2+/AM3, K8, FM1

Fan specifications – Wing Boost 120

•Fan dimension: Length 120x120x25mm (LxHxW)
•Weight: 165g
•Operating voltage: 12 VDC
•Fan speed: 500-1500RPM
•Fan noise level: 8-24.8 dB(A)
•Fan Airflow: 63.92 CFM
•PWM: Yes

Fan specifications – Wing Boost 140

•Fan dimension: Length 140x140x25mm (LxHxW)
•Weight: 143g
•Operating voltage: 12 VDC
•Fan speed: 300-1100RPM
•Fan noise level: 10-19.4 dB(A)
•Fan Airflow: 61.62 CFM
•PWM: Yes

Included accessories:

•1x Mounting material for Socket 775,1156,1366, AM2, AM2(+), AM3
•6x Fan mounting brackets
•1x syringe thermal grease


The Alpenföhn K2 boasts a list of features that can compares favourably to other ultra-high-end dual tower coolers. Starting with the dimensions, we see that it is 160mm in height, similar to the Noctua NH-D14 but shorter than the Phanteks PH-TC14PE and Thermalright Silver Arrow, thus ensuring compatibility with the majority of mid tower cases. Compatibility is a key factor of the K2 as reflected by the trapezoid shape of the fins. However, its maximum width of 144mm is 4mm wider than even the Phanteks PH-TC14PE. Length/depth-wise, the K2 is 154mm, 5mm less than the Phanteks cooler, noting that the dimension includes the fans installed. Further highlighting compatibility is the cooler’s support for all sockets dating back nearly 7 years.

Of all the dual tower radiators, the K2 is by far the heaviest at 1378g, a good 128g more than the already hefty Phanteks, our previous heaviest cooler. This could be attributed to the full copper base and the two extra heat pipes over conventional 6 heat piped designs. The fans are also slightly heavier than previous fans we have encountered. Speaking of the fans, we observe that Alpenföhn have gone for a 120mm and 140mm fan configuration to alleviate some memory compatibility issues. The fan specifications are also comparable to Noctua’s NF-P12 and NF-P14s. The former goes up against the same sized Wing Boost 120 which delivers slightly better performance thanks to the extra 200 RPM operational speed it has over the Noctua. Conversely, the Wing Boost 140 operates at 100 RPM less than the equivalent NF-P14 and not surprisingly delivers slightly less airflow, the difference being marginal at best. The main advantage of the Alpenföhn fans is their PWM functionality which only Thermalright fans currently support (amongst the four dual tower coolers), although this will soon change with Noctua’s new fans.

Like the other three coolers we will keep comparing the K2 to, Alpenföhn hopes to deliver the best in-class performance at low noise, achieving so with heatsink design and fan performance. Let’s take an even closer look at the K2.

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