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Black 120 mm case fan with nine blades and sleeve bearing

Silverstone

Silverstone FN121-P 120 mm case fan 1200 RPM 58.47 CFM 25.15 dBA

SKU CH-D038-M0G74 MPN FN121-P

A 120 mm case fan delivering 58.47 CFM airflow at 25.15 dBA using a 9-bladed sleeve-bearing design

  • Bearing designSleeve
  • Rotational speed1200 +/- 200 RPM
  • Airflow rate58.47 CFM
  • Operating noise25.15 dBA max.
  • Product typeCase Fan
  • Compatible withCase
  • Delivers 58.47 CFM airflow for efficient case cooling
  • Operates at 25.15 dBA maximum for quiet operation
  • Runs at 1200 RPM with 200 RPM tolerance for stable speeds
  • Nine-bladed design balances high airflow with reduced noise
  • Sleeve bearing provides reliable performance for thermal solutions

Silent Cooling for Compact Builds

The SilverStone FN121-P is a 120 mm case fan designed for standard chassis mounts. Its sleeve bearing and nine-bladed rotor deliver 58.47 CFM of airflow while keeping noise to 25.15 dBA at peak speed. The black frame suits understated system aesthetics.

Steady Airflow Under Continuous Load

At the rated 1200 RPM the fan moves a consistent volume of air across heat-generating components. The sleeve bearing maintains stable rotation during extended operation without the speed variance seen in short bursts. Acoustic output remains at the quoted maximum even when the system runs for hours.

Physical Limits of the 120 mm Standard

The unit fits the 120 x 120 x 25 mm mounting pattern used by most mid-tower and mini-ITX cases. Builders needing higher static pressure for dense radiators or restrictive filters may find the airflow-focused blade profile less effective. The fixed 1200 RPM ceiling also caps thermal headroom in heavily overclocked configurations.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $8.99
Cheaper than about 92% of the 8,339 comparable items (median $19.99).

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Specifications

Product
Brand nameSilverStone
Model nameFN121-P
Product typeCase Fan
Product colorBlack
Performance
Rotational speed1200 +/- 200 RPM
Airflow rate58.47 CFM
Size & build
Bearing designSleeve
Product dimensions120 × 120 × 25 mm
Shipping weight0.14 kg
Package size149 × 137 × 30 mm
Compatibility
Compatible withCase
Environment & compliance
Operating noise25.15 dBA max.

Questions about this item

How loud is the 1200 RPM fan when it runs all day?

The SilverStone FN121-P reaches 25.15 dBA at full speed, so it stays quiet during continuous operation.

Which motherboard header does the FN121-P need to spin?

It uses a standard 3-pin or 4-pin fan header on the motherboard for power and speed control.

Will the 120 mm frame line up with the mounting holes on my older case?

Yes, the 120 x 120 x 25 mm dimensions match the long-standing 120 mm fan standard used on older cases.

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