Arctic Cooling Freezer 12 CO CPU Cooler

MX66398 Freezer 12 CO CPU Cooler
MX66398 Freezer 12 CO CPU Cooler MX66398 Freezer 12 CO CPU Cooler MX66398 Freezer 12 CO CPU Cooler MX66398 Freezer 12 CO CPU Cooler

Product Info

Compact Semi Passive Tower CPU Cooler for Continuous Operation

Freezer 12 CO

The successor of the Freezer 11 series convinces all along the line with regards to noise level, cooling capacity, mounting versatility and transport-proofness. As semi passive cooler, the Freezer 12 CO also works extremely efficiently as the fan only starts up at a PWM signal with 40 % pulse width.

  • 3 x Ø6 mm high performance U-shape copper heatpipes
  • High Air Flow design for Air cooling
  • Long life hydraulic bearing for reliable and silent operation
  • Heat-sink with 0.4mm aluminum fins provide best heat dissipation
  • Tower side flow design optimizes cooling performance
  • Design offers Intel & AMD sockets compatibility


Optimized for Continuous Operation

Designed for 24/7 operation, the Freezer 12 CO provides up to 150 Watt cooling capacity with superior service life. Its high-precision dual ball bearing lasts five times as long as standard models - without the slightest compromise in performance.

Semi Passive Cooling

With semi passive operation the Freezer 12 CO provides again a special feature. A sophisticated fan controller that was developed by German engineers allows passive cooling of the CPU during simple applications such as surfing and creating documents. The 92 mm fan only starts up at a PWM signal with 40 % pulse width. This saves energy, extends the service life and makes the cooler at low load completely silent.

Innovative Ventilation

Fluidic analysis and long testing hours allowed us to push the fan efficiency boundary further. This is leading to greater airflow and cooling at lower noise level, which not only crushes the stock cooler performance but also leaves our Freezer 7 Pro far behind.

Optimal Compatibility

Fast and easy to install and extremely reliable, the mounting system is compatible with Intel and AMD sockets.

Easy Installation & Safe Transportation

Thanks to different mounting models for various sockets and a backplate, the Freezer 12 CO is not only fool-proof to install, but also absolutely transport safe..

Multi-directional Mounting

Extremely versatile to fulfill your preference on the airflow pattern within the PC case, you can mount the Freezer 12 in any way you want to get the exact airflow you need.

Multilingual Manuals

We offer a regularly updated user manual in many languages conveniently at your fingertips anywhere and anytime. Put the QR code sticker at a place of your convenience and never waste time again looking for product instructions.


  • Socket compatibility:
    • Intel LGA 2011-v3*/2011*/1156/1155/1151/1150
    • AMD AM4
  • Fan compatibility: 120 x 120 x 25 mm

* SQUARE ILM (80 x 80 mm spacing) only


Product Freezer 12 CO CPU Cooler
Part Number ACFRE00030A
CPU Socket Intel Socket:
Intel LGA 2011-v3*/2011*/1156/1155/1151/1150
AMD Socket:
Material Aluminum cooling fins, copper heatpipes, soldered joints & nickel plating
Bearing Type Dual Ball Bearing
Fan RPM 0 - 2,000 rpm (controlled by PWM)
Air Flow N/A
Air Pressure N/A
Noise Level 0.3 sone
Fan Dimension 92 x 92 x 25 mm
Cooling Power 320W
Recommended for TDP Up to 150W
Input Power N/A
Voltage Range 12V
Rated Current 0.16A
Connector 4 pin PWM
Dimensions (HxWxD) 130 x 108 x 90 mm
Weight 480g

Package Contents

  • Arctic Cooling Freezer 12 CO CPU Cooler
  • Arctic Cooling Premium Fan
  • 2 x M3 6mm Screws
  • 4 x M4x18mm Screws
  • 4 x M3x24mm Screws
  • 4 x #6 32x20mm Screws
  • 1 x MX-4 Thermal Paste
  • 2 x Mounting Clips
  • 1 x Backplate
  • User's Manual