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SilverStone AP121 120mm Air Penetrator case fan, white LED
SilverStone

SilverStone AP121

Expert rating6 / 10

View on silverstonetek.com
Fan Size:
120mm
Airflow:
49.4 CFM
Static Pressure:
1.86 mmH2O
Noise Level:
24.4 dBA

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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: 2026-09-12

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SilverStone AP121 Review

Searching for SilverStone's own case fan rather than one from a cooling-focused brand, the Air Penetrator AP121 is their long-standing 120mm entry, using a funnel-shaped frame to concentrate airflow.

We'd pick it for a SilverStone case build looking to stay brand-consistent, since it balances airflow and static pressure reasonably well without excelling dramatically at either.

Funnel Frame Design

The Air Penetrator's tapered frame is meant to concentrate and direct airflow more than a standard square-framed fan, a design SilverStone has used across several generations of this line.

Comparison to Alternatives

Against the Corsair AF120 Elite new to this catalog, the AP121 gives up some airflow but matches it reasonably on static pressure and noise, making it a fine value alternative for SilverStone-branded builds. Against the Arctic P12 PWM PST in the catalog, the Arctic edges ahead on static pressure per dollar, so budget-focused radiator builds should default there instead.

Our verdict

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

Expert rating6 / 10

A competent, unremarkable fan best chosen for brand consistency in a SilverStone build rather than outright performance.

Best for

  • SilverStone case builds wanting brand-matched fans
  • Balanced airflow and static pressure needs
  • Budget-conscious mainstream builds

Not for

  • Builds chasing best-in-class performance
  • RGB or showcase builds
  • Radiator duty needing maximum pressure

Specifications

What these specs mean

Identity and packaging

BrandSilverStone
ModelAP121
Fan Thickness25 mm

Design

Fan Size120 mm
Bearing TypeFluid Dynamic
LightingNo RGB

Performance

Static Pressure1.71 mmH2O
Max Speed1500 RPM
Noise Level22.4 dBA
PWM ControlNo

Performance at maximum speed

Airflow35.36 CFM

Connection and daisy chain

Connector Type3-Pin DC

Market

PositioningBalanced mainstream

FAQs

What are the key specifications of the SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM)?

Key specs for the SilverStone AP121: Airflow 35.36 CFM, Static Pressure 1.71 mmH2O, Noise Level 22.4 dBA, Max Speed 1500 RPM, Fan Size 120 mm, Bearing Type Fluid Dynamic.

Will the SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM) work with my current setup?

The SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic 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 AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM) best suited to?

Best suited to: SilverStone case builds wanting brand-matched fans; Balanced airflow and static pressure needs; Budget-conscious mainstream builds.

What are the drawbacks of the SilverStone AP121 (120mm/49.4 CFM/1.86 mmH2O Static Pressure/1500 RPM Max/24.4 dBA/Fluid Dynamic Bearing/No RGB/PWM)?

Not the best fit for: Builds chasing best-in-class performance; RGB or showcase builds; Radiator duty needing maximum pressure.

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