Hardware Spec Index

Brontix FN-4251 Ultra 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN4251-ULTRA · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index1,209 (Case Fans scale)
Category rank#24,073
Street price$39
Power3 W
Performance per dollar31.00
Released2019

Specifications

BrandBrontix
ModelBrontix FN-4251 Ultra
Size120 × 120 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise27 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Brontix FN-3573 Edge 140mm PWM Case Fan (3-Pack)389$9Compare
Zephyra FN-2549 Prime 120mm PWM ARGB Case Fan (3-Pack)983$29Compare
Caldera FN-1310 Ti 120mm PWM ARGB Case Fan (3-Pack)845$29Compare
Zephyra FN-2787 SE 120mm PWM Case Fan235$9Compare
Brontix FN-6634 Plus 120mm PWM Case Fan474$19Compare
Zephyra FN-6849 Ti 140mm PWM ARGB Case Fan845$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-4251 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/76525279 (accessed 2026-10-25).