Radiator Alphacool R27-S140 140mm 18 FPI Copper Fins

Alphacool R27-S140 is a 140mm liquid-cooling radiator engineered for PC water-cooling loops. Constructed with copper fins and a fin density of 18 FPI (fins per inch), the radiator provides a compromise between airflow resistance and thermal transfer, making it suitable for single-fan configurations and compact case mounts. The 140mm form factor and copper fin material focus on effective heat dissipation and corrosion-resistant performance within custom cooling circuits.

Advantages

The copper fins deliver higher thermal conductivity compared with aluminium-finned radiators, improving heat transfer from coolant to air. With 18 FPI the radiator balances cooling efficiency and fan airflow requirements, allowing use with moderate-speed fans without excessive static pressure. Its 140mm size supports installations in smaller cases or single-fan positions while maintaining a robust cooling capacity for mainstream CPU or GPU loops. The build quality and materials are chosen for durability and long-term compatibility with standard liquid-cooling components.

Suitable for

• Single-fan 140mm radiator mounts in compact PC cases
• Upgrades to existing custom water-cooling loops requiring copper fins
• Mainstream CPU or GPU cooling where space is limited
• Systems prioritizing balanced airflow and heat dissipation

Key specifications

• Radiator size: 140 mm single-fan form factor
• Fin material: copper fins for improved thermal conductivity
• Fin density: 18 FPI (fins per inch)
• Design: slim single-radiator profile for compact builds
• Compatibility: standard 140mm fan mounting spacing and fittings for PC liquid-cooling loops

How to use

Install the Alphacool R27-S140 in a compatible 140mm fan mount or radiator bay inside the PC chassis, ensuring correct orientation for desired airflow through the copper fins. Connect the inlet and outlet to the loop using appropriate fittings and tubing, and secure the radiator with screws to prevent vibration. Populate the radiator with a 140mm fan selected for the desired balance of airflow and noise; follow standard liquid-cooling assembly and leak-testing procedures before powering the system.

Usage recommendations

For best results use a medium-static-pressure 140mm fan to achieve efficient airflow through the 18 FPI copper fins. When integrating into an existing loop, ensure compatibility of fittings and check coolant composition to avoid galvanic corrosion. Periodic inspection and gentle cleaning of fin surfaces will help maintain thermal performance over time.