Hardware Spec Index

Caldera FN-6640 Pro 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6640-PRO · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index442 (Case Fans scale)
Category rank#28,494
Street price$19
Power3 W
Performance per dollar23.26
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6640 Pro
Size140 × 140 × 25 mm
Speed500–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise32 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-9257 XT 140mm PWM ARGB Case Fan1,269$39Compare
Teralux FN-1144 XT 120mm PWM ARGB Case Fan1,192$49Compare
Zephyra FN-7776 Ti 140mm PWM Case Fan573$19Compare
Zephyra FN-9707 Core 140mm PWM ARGB Case Fan (3-Pack)1,315$49Compare
Caldera FN-3890 Prime 140mm PWM ARGB Case Fan1,098$39Compare
Corvane FN-2590 Prime 140mm PWM Case Fan644$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Caldera FN-6640 Pro 140mm PWM Case Fan”, https://vextor7.com/item/537852 (accessed 2026-10-19).