Hardware Spec Index

Zephyra FN-3661 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3661-ULTRA · Released 2023 · Updated 2026-10-26

Key facts

Benchmark index355 (Case Fans scale)
Category rank#36,235
Street price$9
Power3 W
Performance per dollar39.44
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3661 Ultra
Size120 × 120 × 25 mm
Speed300–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise25 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-8688 Edge 120mm PWM Case Fan (3-Pack)278$9Compare
Brontix FN-3861 Core 120mm PWM Case Fan673$19Compare
Brontix FN-5931 Ti 120mm PWM Case Fan265$9Compare
Teralux FN-8297 Max 120mm PWM Case Fan521$19Compare
Teralux FN-7982 XT 120mm PWM Case Fan (3-Pack)419$9Compare
Caldera FN-2666 Max 120mm PWM Case Fan (3-Pack)595$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Zephyra FN-3661 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/41585495 (accessed 2026-10-26).