Corsair
CORSAIR RS140 140mm PWM Fans – Daisy-Chain Connection – Low-Noise – Magnetic Dome Bearing – Dual Pack – Black
Bottom line: The CORSAIR RS140 140mm PWM Fans: Daisy-chain 4-pin PWM runs multiple fans off one motherboard header; main trade-off: 1,700 RPM top speed will be audible at full PWM ramp.
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Pros & Cons
Pros
- ✓ Daisy-chain 4-pin PWM runs multiple fans off one motherboard header
- ✓ 3.46mm-H2O static pressure suits radiators and dense heatsinks
- ✓ Up to 95.5 CFM airflow at a 1,700 RPM ceiling
- ✓ AirGuide anti-vortex vanes aim airflow at specific hot components
Cons
- ✗ 1,700 RPM top speed will be audible at full PWM ramp
- ✗ 140mm only - no 120mm option in this dual pack
- ✗ Black colorway only; no white or RGB variant here
- ✗ Needs a PWM header, not a 3-pin voltage-controlled fan header
Manufacturer description
The CORSAIR RS140 Dual Pack solves the cable-clutter problem that plagues most 140mm fan installs. Each fan carries a daisy-chain 4-pin PWM connector, so you link both units (and additional RS fans) and drive the whole array from a single motherboard PWM header instead of hunting for splitters. Performance backs up the convenience: the RS140 spins up to 1,700 RPM, moves up to 95.5 CFM, and holds 3.46mm-H2O of static pressure, which is the figure that matters when you are pushing air through a dense radiator or a tower heatsink rather than across open case space. CORSAIR AirGuide anti-vortex…
SpecPicks Verdict
SpecPicks scored CORSAIR RS140 140mm PWM Fans using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Corsair's cooling & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for cooling & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How many RS140 fans can I daisy-chain together?
Each fan has a pass-through 4-pin PWM connector so you can link fans in series and control them from one motherboard PWM header. CORSAIR does not publish a chain limit in this listing, so check the product page or your motherboard header's current rating before building a long chain.
Are these good radiator fans or just case fans?
Both. The RS140 is rated at 3.46mm-H2O static pressure, which is the spec that lets a fan push air through radiator fins and heatsink stacks rather than stalling against them. AirGuide vanes are specifically tuned for radiator and heatsink mounting.
How loud are they at full speed?
CORSAIR does not list a dBA figure here, but the fans use a Magnetic Dome bearing designed to cut friction noise, and Zero RPM mode stops them entirely at low load. At the 1,700 RPM ceiling expect audible airflow, as with any 140mm fan at maximum PWM.
Do I get two fans for the price listed?
Yes. This is the Dual Pack SKU, so the listing covers two 140mm fans. Pricing changes frequently on Amazon, so confirm current pricing and availability on the listing before ordering.
Will these work on a 3-pin fan header?
The RS140 uses a 4-pin PWM connector and relies on PWM signaling for its speed control and Zero RPM behavior. A 3-pin header will typically spin them but without PWM speed control; use a 4-pin PWM header for the intended functionality.
Key Features
- Streamlined Fan Connections: Daisy-chain multiple fans together and control them all through just a single 4-pin PWM connector.
- Precise PWM Speeds: Set your fan speeds up to 1,700 RPM while providing up to 95.5 CFM airflow to your system.
- CORSAIR AirGuide Technology: Anti-vortex vanes direct airflow at your hottest components for concentrated cooling, pushing air in the direction you need when mounted to a radiator or heatsink.
- High Static Pressure: RS fans work well as radiator fans with a static pressure of 3.46mm-H2O to push through obstructions.
- Quiet Operation with Magnetic Dome Bearing: CORSAIR’s Magnetic Dome bearing minimises noise and reduces friction for greater longevity.
Full Specifications
| Brand | Corsair |
|---|---|
| Color | Black |
| Model | CO-9050191-WW |
| Voltage | 12 volts_of_direct_current |
| Wattage | 5.4 watts |
| Material | Copper |
| Unit Count | 2 Count |
| Noise Level | 36 db |
| Part Number | CO-9050191-WW |
| Material Type | Copper |
| Cooling Method | Fan |
| Number of Items | 1 |
| Number of Packs | 2 |
| Air Flow Capacity | 95.5 cfm |
| Compatible Devices | Desktop, Laptop, Radiator, Heatsink |
| Precise PWM Speeds | Set your fan speeds up to 1,700 RPM while providing up to 95.5 CFM airflow to your system. |
| High Static Pressure | RS fans work well as radiator fans with a static pressure of 3.46mm-H2O to push through obstructions. |
| Power Connector Type | 4-Pin |
| Warranty Description | 5 Year Manufacturer |
| Maximum Rotational Speed | 1700 rpm |
Ready to buy?
CORSAIR RS140 140mm PWM Fans – Daisy-Chain Connection – Low-Noise – Magnetic Dome Bearing – Dual Pack – Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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