Hardware Spec Index

Zephyra PW-9391 Ultra 850W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW9391-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index1,158 (Power Supplies scale)
Category rank#23,486
Street price$59
Power850 W (rated)
Performance per dollar19.63
Released2020

Specifications

BrandZephyra
ModelZephyra PW-9391 Ultra
Rated output850 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorATX
ModularityNon-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Caldera PW-7932 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,772$149Compare
Caldera PW-1470 Plus 1000W 80 PLUS Gold ATX 3.0 Power Supply1,844$159Compare
Caldera PW-9437 Edge 750W 80 PLUS Gold ATX Power Supply1,303$89Compare
Teralux PW-5699 Ultra 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,913$339Compare
Caldera PW-3792 Ti 550W 80 PLUS Bronze ATX Power Supply753$39Compare
Vantrel PW-7683 Plus 1000W 80 PLUS Gold ATX 3.1 Power Supply2,036$189Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-9391 Ultra 850W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/4504672 (accessed 2026-10-23).