ARCTIC 120×38mm High-Static-Pressure Server Fans (3-pack)

The ARCTIC S12038-8K (3 Pack) is a high-static-pressure 120×38 mm PWM-controlled cooling fan set designed for 4U servers, radiators and heatsinks where strong airflow and durability matter.

These three ARCTIC S12038-8K fans bring a balance of powerful airflow, elevated static pressure and robust bearing construction in a compact 120×38 mm frame. Built to fit constrained rack and tower spaces, each fan uses dual ball bearings in a brass housing to resist heat and dust, while a long 30 cm cable and standard 4-pin connector give flexible control options across 2-, 3- and 4-pin headers.

How does the S12038-8K perform in tight server or rack environments?

The S12038-8K is engineered for restricted airflow situations like 4U chassis and dense radiator arrays. It delivers strong static pressure to push air through fin stacks and drive cooling in compact setups.

• Static pressure: 37 mmH₂O for pushing air through radiators and heatsinks
• Maximum airflow: up to 370 m³/h for sustained ventilation
• 120×38 mm form factor fits 4U server bays and many rack mounts

What control and compatibility options are available?

The fans support both PWM and voltage regulation, so you can use fine-grained speed control on modern 4-pin headers or simpler control on 3- and 2-pin headers. The included 30 cm cable allows flexible positioning inside chassis and racks.

• 4-pin PWM connector for automatic speed adjustments
• Backwards-compatible with 3-pin and 2-pin headers
• 30 cm cable for easier routing and placement inside systems

How durable are these fans under continuous operation?

Durability is a priority: the impeller is secured within a brass housing and rides on two ball bearings, offering resistance to heat, dust and long-term wear. That makes the fans suitable for continuous server and workstation use where reliability matters.

• Brass-encased impeller for structural stability
• Dual ball bearings reduce wear and improve lifetime
• Designed to withstand higher temperatures and environmental stress

Can the S12038-8K be used on radiators, heatsinks and as replacements?

Yes — the S12038-8K is a versatile cooler fan suited for multiple roles. Whether upgrading a CPU cooler, fitting a radiator or replacing a failing rack fan, the fan’s size and performance make it a practical choice.

• Suitable as radiator fan or heatsink blower thanks to high static pressure
• Works as an upgrade or direct replacement in many 4U and tower systems
• Pack of three provides multiple spares or matched push/pull configurations

Who is this for: IT administrators, system builders and enthusiast PC users who need dependable, high-pressure 120×38 mm fans for rack-mounted servers, dense radiators or constrained cooling spaces. The 3-pack provides matched fans for multi-fan setups or on-hand replacements, while PWM support and robust bearing construction suit continuous operation in professional environments.