Hardware Spec Index

Teralux FN-9921 Ultra 120mm PWM Case Fan

Case Fans · Teralux · SKU FN9921-ULTRA · Released 2024 · Updated 2026-10-25

Key facts

Benchmark index600 (Case Fans scale)
Category rank#39,500
Street price$19
Power4 W
Performance per dollar31.58
Released2024

Specifications

BrandTeralux
ModelTeralux FN-9921 Ultra
Size120 × 120 × 25 mm
Speed500–3,000 RPM (PWM)
Airflow102.0 CFM
Static pressure3.30 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-8490 Edge 140mm PWM Case Fan693$19Compare
Zephyra FN-5161 Prime 120mm PWM ARGB Case Fan1,012$29Compare
Zephyra FN-3597 XT 120mm PWM Case Fan539$19Compare
Zephyra FN-8633 Prime 120mm PWM Case Fan782$19Compare
Caldera FN-5448 Max 140mm PWM Case Fan541$19Compare
Zephyra FN-5671 Core 120mm PWM ARGB Case Fan (3-Pack)1,039$39Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Teralux FN-9921 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/14534255 (accessed 2026-10-25).