Hardware Spec Index

Zephyra PW-5558 Pro 850W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW5558-PRO · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,880 (Power Supplies scale)
Category rank#27,002
Street price$129
Power850 W (rated)
Performance per dollar14.57
Released2022

Specifications

BrandZephyra
ModelZephyra PW-5558 Pro
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 factorATX
ModularityFully modular
Fan140 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
Novexa PW-4139 Prime 850W 80 PLUS Bronze ATX Power Supply1,384$79Compare
Teralux PW-6371 Prime 1000W 80 PLUS Gold ATX 3.0 Power Supply2,039$209Compare
Novexa PW-1897 Prime 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,426$309Compare
Novexa PW-3447 XT 650W 80 PLUS Bronze ATX Power Supply1,021$49Compare
Caldera PW-5261 Max 550W 80 PLUS Gold ATX 3.0 Power Supply876$49Compare
Vantrel PW-3173 Core 850W 80 PLUS Bronze ATX 3.0 Power Supply1,317$69Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-5558 Pro 850W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/95967592 (accessed 2026-10-21).