Hardware Spec Index

Teralux FN-4977 Ultra 140mm PWM Case Fan

Case Fans · Teralux · SKU FN4977-ULTRA · Released 2021 · Updated 2026-10-27

Key facts

Benchmark index738 (Case Fans scale)
Category rank#27,618
Street price$29
Power4 W
Performance per dollar25.45
Released2021

Specifications

BrandTeralux
ModelTeralux FN-4977 Ultra
Size140 × 140 × 25 mm
Speed200–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Teralux FN-4977 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/46439945 (accessed 2026-10-27).