Hardware Spec Index

Brontix FN-3977 Pro 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3977-PRO · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,117 (Case Fans scale)
Category rank#7,907
Street price$39
Power4 W
Performance per dollar28.64
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3977 Pro
Size120 × 120 × 25 mm
Speed300–2,600 RPM (PWM)
Airflow88.4 CFM
Static pressure2.86 mmH₂O
Noise31 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Zephyra FN-9393 Pro 120mm PWM Case Fan (3-Pack)641$19Compare
Caldera FN-3029 SE 140mm PWM Case Fan (3-Pack)321$9Compare
Teralux FN-6548 Edge 140mm PWM ARGB Case Fan (3-Pack)888$29Compare
Brontix FN-1881 SE 140mm PWM ARGB Case Fan (3-Pack)1,400$49Compare
Corvane FN-1267 SE 120mm PWM Case Fan (3-Pack)687$19Compare
Brontix FN-9959 XT 140mm PWM ARGB Case Fan1,084$39Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3977 Pro 120mm PWM ARGB Case Fan”, https://vextor7.com/item/3101415 (accessed 2026-10-26).