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Alpine 20 PLUS CO

Intel Socket LGA 2011

Availability: In stock

USD 17.99
USD 17.99
Up to 5X More Durable:
Ideal for Entry Level Servers and PCs
Besides the different bearing the Alpine 20 PLUS CO (Alpine PLUS series) offers the same outstanding noise/performance ratio as the Alpine 11 Plus and Alpine 64 Plus.
"Nothing short of an excellent choice ..."
"Better in every way than
the boxed cooler ..."
Reasonable price
+ Quiet
+ Long lasting fan
+ Easy installation
Excellent Cooling Perfomance
The 92 mm PWM fan, aluminum heatsink in combination with pre-applied MX-4 high performance thermal compound provide excellent cooling performance and improved heat transfer from the CPU. Test results from Mod Your Case have shown that this cooler is much more efficient than the boxed cooler in lowering the CPU temperature under load.
Cooling Performance on Intel Core i7-3930K
Alpine 20 PLUS CO (at 2,200 RPM)
Boxed cooler (at 3,000 PRM)
Ultra Quiet
According to a test by VR-Zone, the noise level of this cooler is cut by nearly half comparing the results of the AMD X4 995 boxed cooler. Thanks to the PWM control, the fan speed adjusts according to the CPU temperature and thus the noise level remains at an absolute minimum which qualifies it as a silent cooler. Click here to see how the PWM control settings can be changed according to your performance and noise preference.
Noise Level on Intel Core i7-3930K
Alpine 20 PLUS CO (at 2,200 RPM)
0.5 Sone
Boxed cooler (at 3,000 PRM)
2 Sone
Continuous Operation
Reliable Installation
The Alpine 20 PLUS CO is ideal for entry level servers running 24/7, offering an extended service life of up to 5 times of standard models. Its high quality dual ball bearing from Japan reduces rotational friction and is less sensitive to dust and high temperature, making it more durable and wear resistant than the common fluid dynamic bearing.
The pre-installed spring-loaded screws allow a hassle-free setup and at the same time, protect your mainboard during the installation process with optimized contact pressure. On the other hand, it saves you one more step with th pre-applied MX-4 thermal compound.
Intel Socket
1151 1150 1155 1156 2066 2011(-3) 1366 775
No No No No Yes* Yes* No No
* SQUARE ILM (80 x 80 mm spacing) only
AMD Socket
sTR4 AM4 AM3(+) AM2(+) AM1 FM2(+) FM1
No No No No No No No

Recommended for TDP up to:
95 Watts

Aluminum Extrusion

92 mm
Fan Speed:
600 - 2,200 RPM (Controlled by PWM)
Noise Level:
0.5 Sone @ 2,200 RPM
Current / Voltage (per fan)
0.24 A / 12 V
Power Consumption:
2.88 Watts
Size & Weight
Shipping Information
Item Number:


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The PC is reporting a low fan speed during booting.

Your PC may send you a CPU Fan Speed warning when starting the PC if the fan speed is lower than the default minimum value. If you do not wish to receive this warning in the future, you may enter the BIOS to reset the minimum value or disable the function completely.

As shown in the example below, you can adjust the settings under Power -> CPU Fan Speed warning. By setting the value to 800 RPM, you should avoid any warnings of this kind in the future.


Intel LGA 2011(-3) compatibility (square / narrow ILM)?

For the socket LGA 2011(-3), Intel specifies two different formats: SQUARE ILM & NARROW ILM. Please note that Alpine 20 PLUS CO is compatible to LGA 2011(-3) refer ONLY to mainboards fitted with SQUARE ILM (80 x 80 mm spacing).

Pin Assignment?read

Pin No. Wire Colour Wire Colour Wire Colour Power/Signal
Pin 1 Black Black Black (with White mark) Ground
Pin 2 Red Yellow Black VDC +12V
Pin 3 Yellow Green Black RPM Signal
Pin 4 Blue Blue Black PWM Signal


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  • PST Cable
    USD 4.99
    PST Cable
    PWM Sharing Cable
    Centralized Cooling at minimal Noise Level
    Share the PWM Signal with several PWM Fans
  • MX-2
    USD 6.99
    All-round Thermal Compound
    Safe Application
    Outstanding Thermal Transfer Rate

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