Hardware Spec Index

Zephyra PW-9478 Prime 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Zephyra · SKU PW9478-PRIME · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index1,992 (Power Supplies scale)
Category rank#35,739
Street price$209
Power850 W (rated)
Performance per dollar9.53
Released2022

Specifications

BrandZephyra
ModelZephyra PW-9478 Prime
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin2×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty10 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Zephyra PW-3537 Ultra 1600W 80 PLUS Platinum ATX Power Supply2,926$319Compare
Novexa PW-4284 XT 750W 80 PLUS Gold ATX 3.1 Power Supply1,480$99Compare
Caldera PW-4499 Pro 1000W 80 PLUS Gold ATX 3.0 Power Supply1,922$169Compare
Zephyra PW-2550 Ultra 1000W 80 PLUS Gold ATX Power Supply2,092$189Compare
Teralux PW-6371 Max 650W 80 PLUS Bronze ATX 3.1 Power Supply891$39Compare
Zephyra PW-8451 Max 650W 80 PLUS Gold ATX Power Supply869$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-9478 Prime 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/13634009 (accessed 2026-10-19).