CPU cooler Arctic Freezer 4U-M Ampere Server — passive/heatsink solution for Ampere servers, 120W TDP

Arctic Freezer 4U-M Ampere Server is a passive heatsink solution engineered for Ampere-based processors with a 120W TDP. Designed specifically for 4U rack-mount servers and dense server environments, this cooler relies on a large surface area and optimized fin geometry to dissipate heat without active fans. Its low-profile, server-oriented form factor and durable construction make it suitable for constrained airflow conditions commonly found in data centers and colocation racks.

Advantages

The passive design eliminates moving parts, reducing maintenance needs and the risk of mechanical failure. A heatsink geometry optimized for vertical airflow paths in 4U chassis provides effective thermal transfer while maintaining compatibility with standard server layouts. Constructed from high-conductivity materials, the cooler offers stable thermal performance for continuous server operation and helps minimize acoustic disturbances by removing fan noise.

Suitable for

• 4U rack servers with Ampere-based CPUs up to 120W TDP
• High-density server racks and blade systems
• Data center and colocation environments requiring low-maintenance cooling
• Quiet or acoustically sensitive installations where fanless operation is preferred

Key specifications

• Cooling type: Passive heatsink
• Designed TDP: 120 W
• Form factor: Low-profile 4U server-compatible heatsink
• Material: High thermal conductivity metal (fin and base construction)
• Mounting: Server socket-compatible mounting for Ampere platforms
• Airflow orientation: Optimized for chassis vertical airflow paths
• Maintenance: Tool-friendly installation and low-maintenance design

How to use

Install the heatsink on the server CPU following the server manufacturer's CPU retention and mounting instructions, ensuring proper alignment with the socket and mounting points. Apply an appropriate thin layer of thermal interface material between the CPU heat spreader and the heatsink base to ensure efficient heat transfer. Secure the heatsink using the provided mounting mechanism and verify that chassis airflow direction matches the heatsink's intended orientation for passive dissipation. After installation, monitor CPU temperatures under typical load to confirm adequate cooling performance.

Usage recommendations

Use this passive heatsink in systems where chassis airflow is consistent and unobstructed; avoid placing obstructions above or below the heatsink that could hamper convective flow. For racks with variable airflow or higher ambient temperatures, consider supplemental chassis fans or active cooling to maintain safe operating temperatures for sustained workloads.