Consumercarts
SilverStone FN121 120mm case fan, clear
SilverStone

SilverStone FN121

Expert rating6 / 10

View on SilverStoneView on silverstonetek.com
Fan Size:
120mm
Airflow:
58.47 CFM

Consumercarts is reader-supported. Learn more

Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: SilverStone Last updated: 2026-10-09

Report an error

Where to buy

SilverStone FN121 Review

SilverStone FN121 is a budget 120 mm case fan with no RGB lighting, listed as a 1200 RPM fan with a sleeve bearing and a 3-pin DC connector.

The FN121 is a plain 120 mm fan without lighting, positioned as a budget option for ordinary case airflow. Our data lists a sleeve bearing, a 1200 RPM maximum speed and a 3-pin DC connector without PWM, while the product title lists PWM, so confirm which version you are buying before counting on speed control. A sleeve bearing is the simpler, lower cost design. With no lighting and only basic specs it suits a cheap replacement, but not a build wanting RGB.

Comparison to Alternatives

Against the be quiet! Pure Wings 3 120mm PWM already in our catalog, the FN121 is quieter at idle but gives up several CFM of airflow, a fair trade for a budget-focused build. Compared with the SilverStone FQ121 above, the FN121 skips the static-pressure-tuned blade design for lower cost and a plainer, quieter general-purpose fan.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating6 / 10

An unremarkable but reliably quiet budget fan for general case airflow.

Best for

  • Budget case airflow
  • Quiet everyday builds
  • Simple fan replacements

Not for

  • Radiator or heatsink duty
  • RGB builds
  • High-airflow positive pressure builds

Specifications

What these specs mean

Identity and packaging

BrandSilverStone
ModelFN121-P

Design

Fan Size120 mm
Bearing TypeSleeve
LightingNo RGB

Performance

Max Speed1200 RPM
PWM ControlNo

Performance at maximum speed

Airflow58.47 CFM

Connection and daisy chain

Connector Type3-Pin DC

Market

PositioningBudget

FAQs

What are the key specifications of the SilverStone FN121 (120mm/44.5 CFM/1.1 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM)?

Key specs for the SilverStone FN121: Airflow 58.47 CFM, Max Speed 1200 RPM, Fan Size 120 mm, Bearing Type Sleeve, Lighting No RGB, PWM Control No.

Will the SilverStone FN121 (120mm/44.5 CFM/1.1 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) work with my current setup?

The SilverStone FN121 (120mm/44.5 CFM/1.1 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) lists Fan Size is 120 mm. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the SilverStone FN121 (120mm/44.5 CFM/1.1 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) best suited to?

Best suited to: Budget case airflow; Quiet everyday builds; Simple fan replacements.

What are the drawbacks of the SilverStone FN121 (120mm/44.5 CFM/1.1 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM)?

Not the best fit for: Radiator or heatsink duty; RGB builds; High-airflow positive pressure builds.

Compare and read more