Hardware Spec Index

Brontix FN-4977 XT 120mm PWM Case Fan

Case Fans · Brontix · SKU FN4977-XT · Released 2026 · Updated 2026-10-18

Key facts

Benchmark index820 (Case Fans scale)
Category rank#24,691
Street price$29
Power4 W
Performance per dollar28.28
Released2026

Specifications

BrandBrontix
ModelBrontix FN-4977 XT
Size120 × 120 × 25 mm
Speed300–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-4977 XT 120mm PWM Case Fan”, https://vextor7.com/item/6452829 (accessed 2026-10-18).