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be quiet! Silent Wings Pro 4 120mm PWM vs SilverStone FN121: Comparison
What is the difference between be quiet! Silent Wings Pro 4 120mm PWM and SilverStone FN121?
Airflow is where these two genuinely part company, be quiet! Silent Wings Pro 4 120mm PWM 83.9 CFM against SilverStone FN121 58.47 CFM, a 30% lead for be quiet! Silent Wings Pro 4 120mm PWM. Max speed runs the same way, 3000 RPM on the be quiet! Silent Wings Pro 4 120mm PWM versus 1200 RPM on the SilverStone FN121, another win for be quiet! Silent Wings Pro 4 120mm PWM. There is a split on bearing type as well, Fluid Dynamic on the be quiet! Silent Wings Pro 4 120mm PWM versus Sleeve on the SilverStone FN121. They differ on connector type too, 4-Pin PWM on the be quiet! Silent Wings Pro 4 120mm PWM versus 3-Pin DC on the SilverStone FN121. There is a split on pwm control as well, Yes on the be quiet! Silent Wings Pro 4 120mm PWM versus No on the SilverStone FN121. They differ on positioning too, Premium on the be quiet! Silent Wings Pro 4 120mm PWM versus Budget on the SilverStone FN121.
Who each one is for
Buy the be quiet! Silent Wings Pro 4 120mm PWM for 360mm and 280mm AIO radiators and restrictive front filters and dense meshes, though it is the wrong buy for open-air mesh cases where pressure is wasted and RGB lighting requirements. The SilverStone FN121 suits budget case airflow and Quiet everyday builds, though it is not the pick for radiator or heatsink duty and RGB builds. Our rating of the be quiet! Silent Wings Pro 4 120mm PWM (9/10): be quiet!'s best radiator fan, closing most of the gap to Noctua's A12x25 at a friendlier price. Our rating of the SilverStone FN121 (6/10): an unremarkable but reliably quiet budget fan for general case airflow.
What be quiet! Silent Wings Pro 4 120mm PWM and SilverStone FN121 have in common
The common ground is wider than the gap: fan size and lighting are identical here.
Specs and benchmarks
Fan Size
- be quiet! Silent Wings Pro 4 120mm PWM
- 120 mm
- SilverStone FN121
- 120 mm
Brand
- be quiet! Silent Wings Pro 4 120mm PWM
- be quiet!
- SilverStone FN121
- SilverStone
Model
- be quiet! Silent Wings Pro 4 120mm PWM
- Silent Wings Pro 4 120mm PWM
- SilverStone FN121
- FN121-P
Bearing Type
- be quiet! Silent Wings Pro 4 120mm PWM
- Fluid Dynamic
- SilverStone FN121
- Sleeve
Lighting
- be quiet! Silent Wings Pro 4 120mm PWM
- No RGB
- SilverStone FN121
- No RGB
Max Speed
- be quiet! Silent Wings Pro 4 120mm PWM
- 3000 RPMBest
- SilverStone FN121
- 1200 RPM-60%
Airflow
- be quiet! Silent Wings Pro 4 120mm PWM
- 83.9 CFMBest
- SilverStone FN121
- 58.47 CFM-30%
PWM Control
- be quiet! Silent Wings Pro 4 120mm PWM
- Yes
- SilverStone FN121
- No
Connector Type
- be quiet! Silent Wings Pro 4 120mm PWM
- 4-Pin PWM
- SilverStone FN121
- 3-Pin DC
Positioning
- be quiet! Silent Wings Pro 4 120mm PWM
- Premium
- SilverStone FN121
- Budget
Which one should you pick?
Choose be quiet! Silent Wings Pro 4 120mm PWM if you want the higher max speed (3000 RPM vs 1200 RPM) and the higher airflow (83.9 CFM vs 58.47 CFM).
Choose SilverStone FN121 if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | be quiet! Silent Wings Pro 4 120mm PWM | SilverStone FN121 |
|---|---|---|
| Amazon | View on Amazon | |
| SilverStone | View on SilverStone |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
be quiet! Silent Wings Pro 4 120mm PWM
9 / 10 Expert Rating
be quiet!'s best radiator fan, closing most of the gap to Noctua's A12x25 at a friendlier price.
SilverStone FN121
6 / 10 Expert Rating
An unremarkable but reliably quiet budget fan for general case airflow.




