Hardware Spec Index

Brontix FN-3847 SE 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3847-SE · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index348 (Case Fans scale)
Category rank#37,791
Street price$9
Power4 W
Performance per dollar38.67
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3847 SE
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise33 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Caldera FN-9745 Pro 120mm PWM Case Fan641$19Compare
Caldera FN-5650 Max 120mm PWM ARGB Case Fan1,387$49Compare
Corvane FN-6131 Max 140mm PWM Case Fan489$19Compare
Brontix FN-2938 Prime 120mm PWM ARGB Case Fan1,400$49Compare
Corvane FN-2449 Core 140mm PWM ARGB Case Fan848$29Compare
Corvane FN-6879 Plus 140mm PWM ARGB Case Fan (3-Pack)775$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3847 SE 120mm PWM Case Fan”, https://vextor7.com/item/7247489 (accessed 2026-10-21).