Hardware Spec Index

Caldera FN-1721 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN1721-ULTRA · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index323 (Case Fans scale)
Category rank#11,148
Street price$9
Power4 W
Performance per dollar35.89
Released2020

Specifications

BrandCaldera
ModelCaldera FN-1721 Ultra
Size140 × 140 × 25 mm
Speed400–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Zephyra FN-7321 Core 120mm PWM Case Fan (3-Pack)745$19Compare
Brontix FN-3636 SE 120mm PWM ARGB Case Fan932$29Compare
Teralux FN-9677 Pro 140mm PWM Case Fan567$19Compare
Zephyra FN-9337 Edge 140mm PWM Case Fan396$9Compare
Brontix FN-4216 Ultra 140mm PWM Case Fan (3-Pack)443$19Compare
Caldera FN-4429 Edge 120mm PWM Case Fan543$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Caldera FN-1721 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/6146474 (accessed 2026-10-25).