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CORSAIR RS120 II 120mm PWM Case Fan, Magnetic Dome Bearing, AirGuide Technology, Zero RPM Mode, CO-9051075-WW
- Airflow: 10.8-73 CFM airflow range with speeds from 420 to 2,100 RPM +/-10% for adjustable cooling performance.
- Zero RPM Mode: Stops the fan under low and moderate loads for quiet computing.
- Magnetic Dome Bearing: Reduces friction and noise while supporting longevity.
- AirGuide Technology: Anti-vortex stator vanes focus airflow for targeted cooling and improved static pressure.
- Daisy-Chain PWM: Connect multiple fans with daisy-chain 4-pin PWM connectors to one motherboard header without a hub or controller.
- Case And Radiator Fit: 120mm x 120mm x 26mm fan designed for case cooling and radiator use; includes mounting screws and a PWM extension cable.
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Overview
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- Support Phone: 1-888-222-4346
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The CORSAIR RS120 II is a 120mm PWM case fan for builders who want adjustable cooling for a PC case or radiator, with speeds from 420 to 2,100 RPM, up to 73 CFM airflow, and Zero RPM mode for quiet operation at low and moderate loads.
Recommended For
- PC builders adding a 120 mm case or radiator fan who want motherboard-controlled PWM speeds and a direct daisy-chain connection rather than a separate fan controller.
- Desktop users who want the fan to stop during low-load periods and ramp up when cooling is needed, using its Zero RPM mode and PWM control.
- Builders cooling a 120 mm radiator or directing case airflow who want a fan designed for both uses, with AirGuide vanes for more focused airflow.
- Builders choosing a subdued, non-illuminated look who prefer a black fan without RGB lighting.
Real-World Use Scenarios
- When adding or replacing a 120mm case fan in a gaming or work PC, use it to move air through the case; motherboard PWM control lets its speed respond to system temperature.
- When mounting a fan on a compatible radiator, its focused airflow is intended to help push air through the radiator fins; actual cooling depends on the radiator, case, and fan-speed settings.
- When installing several fans in one build, daisy-chain their PWM connections to reduce cable clutter and control the linked fans together from a motherboard header, without a separate fan hub.
- For everyday browsing or other light workloads, enable Zero RPM mode so the fan can stop when cooling demand is low; it will resume as the system needs more airflow.
- During gaming or other sustained, heat-producing tasks, a PWM fan curve can increase airflow as temperatures rise; at higher speeds, expect more audible fan noise than at low-load speeds.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Desktop PC case cooling with PWM speed control and zero-RPM operation at low loads |
| Fan Performance | 420–2,100 RPM ±10%, 10.8–73 CFM airflow, 0.15–4.2 mm-H₂O air pressure, and 10–36 dBA noise |
| Bearing And Fan Control | Magnetic Dome bearing with a 4-pin PWM connector, daisy-chain PWM connections, AirGuide stator vanes, and Zero RPM Mode |
| Size, Color And Lighting | 120 × 120 × 26 mm, black, with no LED lighting; weighs 0.326 lb (0.148 kg) |
| Package Contents | One fan, one PWM extension cable, and four mounting screws |
| Warranty | Five-year warranty |
| Model Identifiers | CORSAIR RS120 II; Series RS II; part number CO-9051075-WW |