Hardware Spec Index

Caldera FN-5781 Ultra 140mm PWM ARGB Case Fan

Case Fans · Caldera · SKU FN5781-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,254 (Case Fans scale)
Category rank#44,793
Street price$49
Power3 W
Performance per dollar25.59
Released2021

Specifications

BrandCaldera
ModelCaldera FN-5781 Ultra
Size140 × 140 × 25 mm
Speed200–1,900 RPM (PWM)
Airflow91.2 CFM
Static pressure1.80 mmH₂O
Noise34 dBA
BearingMagnetic levitation
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
Brontix FN-9998 Prime 140mm PWM ARGB Case Fan (3-Pack)1,213$39Compare
Brontix FN-4760 Pro 140mm PWM ARGB Case Fan (3-Pack)1,051$39Compare
Teralux FN-9867 Core 140mm PWM ARGB Case Fan1,199$39Compare
Caldera FN-6995 Ultra 120mm PWM Case Fan428$9Compare
Brontix FN-5369 Core 120mm PWM Case Fan536$19Compare
Brontix FN-9397 Prime 140mm PWM ARGB Case Fan993$39Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Caldera FN-5781 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/92638116 (accessed 2026-10-26).