Hardware Spec Index

Caldera FN-2491 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN2491-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index425 (Case Fans scale)
Category rank#33,839
Street price$19
Power2 W
Performance per dollar22.37
Released2020

Specifications

BrandCaldera
ModelCaldera FN-2491 Ultra
Size120 × 120 × 25 mm
Speed400–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-3361 Ultra 120mm PWM ARGB Case Fan (3-Pack)1,029$29Compare
Corvane FN-9538 Prime 120mm PWM ARGB Case Fan1,203$39Compare
Corvane FN-5811 Ultra 120mm PWM ARGB Case Fan987$29Compare
Brontix FN-1306 Ultra 120mm PWM ARGB Case Fan1,150$39Compare
Caldera FN-1540 Ultra 140mm PWM Case Fan (3-Pack)501$19Compare
Corvane FN-8947 Max 120mm PWM Case Fan472$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Caldera FN-2491 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/2589401 (accessed 2026-10-25).