Cooler Master Launches Mobius 120 OC Fan: Redefining High-Performance Cooling with Lifetime Warranty

Revolutionary ring blade design and dual ball bearings deliver unprecedented quiet operation at speeds up to 3200 RPM.

October 28, 2025 – Cooler Master, a leading name in PC components and cooling solutions, has launched its latest flagship case fan, the Mobius 120 OC. This high-performance fan incorporates innovative engineering advancements aimed at users demanding exceptional cooling performance with minimal noise disruption.

Priced at $32.99 and backed by a lifetime warranty, the Mobius 120 OC is designed for advanced users, overclockers, and professionals working in audio-visual environments where silent operation is crucial.

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01 Engineering Breakthrough: Ring Blade Design and Anti-Vibration System

The cornerstone of the Mobius 120 OC’s performance is its Ring Blade Design. This innovative features interconnecting fan blades that create a reinforced and rigid structure, significantly reducing vibration for stable and fluid operation even at high speeds.

To further ensure quiet performance, the fan incorporates premium anti-vibration dampers with a patented corner mount design. These dampers effectively reduce vibration and rattling while maintaining chassis stability, allowing the fan to operate at noise levels as low as 17.4 dBA in its quietest mode.

02 Premium Components for Enhanced Durability

Cooler Master has equipped the Mobius 120 OC with a Double Ball Bearing system. This design minimizes friction, contributing to a longer lifespan and sustained silent operation. The fan’s motor hub is constructed from metal, not plastic, providing additional stability and reinforcement for extended superior performance.

These high-quality components contribute to an impressive Mean Time Between Failures (MTBF) rating of 200,000 hours, ensuring reliability for long-term use.

03 User-Centric Features for Flexible Control

A standout feature is the integrated fan speed toggle built directly into the cable. This allows users to physically switch between three performance modes without needing software or BIOS adjustments:

• Low (L) Mode: 0-1500 RPM, 42.2 CFM airflow, 17.4 dBA noise level
• Medium (M) Mode: 0-2400 RPM, 65.5 CFM airflow, 31.1 dBA noise level
• High (H) Mode: 0-3200 ±10% RPM, 88.1 CFM airflow, 39.3 dBA noise level

This flexibility makes the fan suitable for a wide range of applications, from everyday computing that requires quiet operation to intensive tasks like gaming or video editing that demand maximum cooling.

The fan operates via a 4-pin PWM connector, with power consumption ranging from 1.20W in Low mode to 4.20W in High mode. Its dimensions are 120x120x27mm, and it weighs 214g.

04 Market Position and Lifetime Warranty

As the flagship model in Cooler Master's Mobius series, the 120 OC is optimized for both performance and noise levels, making it suitable for various applications including case fans, liquid cooling radiators, and fan coils.

The product carries Cooler Master’s lifetime warranty, a testament to the company’s confidence in the fan’s durability and performance. This warranty covers both parts and labor for the lifetime of the product.

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The Mobius 120 OC represents Cooler Master’s continued commitment to engineering innovation in the PC cooling space. By addressing the critical needs of performance, noise reduction, and user convenience, this fan sets a new benchmark for high-end cooling solutions. For enthusiasts and professionals seeking uncompromising thermal performance, the Mobius 120 OC offers a compelling combination of cutting-edge technology and practical functionality.