Hardware Spec Index

Brontix FN-3977 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3977-ULTRA · Released 2019 · Updated 2026-10-18

Key facts

Benchmark index1,065 (Case Fans scale)
Category rank#37,334
Street price$29
Power4 W
Performance per dollar36.72
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3977 Ultra
Size140 × 140 × 25 mm
Speed300–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3977 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/433285 (accessed 2026-10-18).