Hardware Spec Index

Teralux FN-9891 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Teralux · SKU FN9891-ULTRA · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index506 (Case Fans scale)
Category rank#30,058
Street price$19
Power3 W
Performance per dollar26.63
Released2023

Specifications

BrandTeralux
ModelTeralux FN-9891 Ultra
Size140 × 140 × 25 mm
Speed200–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise24 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-1669 Max 140mm PWM Case Fan543$19Compare
Caldera FN-7978 Ultra 120mm PWM ARGB Case Fan1,131$39Compare
Brontix FN-2514 Ultra 140mm PWM Case Fan213$9Compare
Teralux FN-5992 Max 140mm PWM ARGB Case Fan1,049$39Compare
Caldera FN-4865 Edge 120mm PWM Case Fan406$19Compare
Caldera FN-7952 Plus 140mm PWM ARGB Case Fan979$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Teralux FN-9891 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/24676473 (accessed 2026-10-19).