Hardware Spec Index

Zephyra PW-4558 XT 850W 80 PLUS Platinum ATX Power Supply

Power Supplies · Zephyra · SKU PW4558-XT · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index1,829 (Power Supplies scale)
Category rank#17,789
Street price$159
Power850 W (rated)
Performance per dollar11.50
Released2020

Specifications

BrandZephyra
ModelZephyra PW-4558 XT
Rated output850 W continuous
Efficiency80 PLUS Platinum (92% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorATX
ModularityFully modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

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

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Cite this page: Hardware Spec Index, “Zephyra PW-4558 XT 850W 80 PLUS Platinum ATX Power Supply”, https://vextor7.com/item/997987 (accessed 2026-10-24).