Hardware Spec Index

Teralux FN-3878 Ultra 140mm PWM ARGB Case Fan

Case Fans · Teralux · SKU FN3878-ULTRA · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index1,250 (Case Fans scale)
Category rank#3,660
Street price$49
Power3 W
Performance per dollar25.51
Released2020

Specifications

BrandTeralux
ModelTeralux FN-3878 Ultra
Size140 × 140 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow100.8 CFM
Static pressure2.00 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Corvane FN-7408 SE 140mm PWM Case Fan248$9Compare
Caldera FN-2966 Core 120mm PWM Case Fan721$19Compare
Brontix FN-6947 Plus 120mm PWM Case Fan664$19Compare
Caldera FN-8507 Pro 140mm PWM ARGB Case Fan (3-Pack)957$29Compare
Teralux FN-8174 Ultra 140mm PWM ARGB Case Fan827$29Compare
Teralux FN-3317 Plus 120mm PWM Case Fan (3-Pack)551$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Teralux FN-3878 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/5233045 (accessed 2026-10-20).