Hardware Spec Index

Zephyra PW-2578 XT 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW2578-XT · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,108 (Power Supplies scale)
Category rank#4,667
Street price$59
Power550 W (rated)
Performance per dollar18.78
Released2021

Specifications

BrandZephyra
ModelZephyra PW-2578 XT
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan120 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

Similar Power Supplies

ModelBenchmarkPriceCompare
Novexa PW-2026 XT 850W 80 PLUS Gold ATX 3.0 Power Supply1,872$139Compare
Zephyra PW-5018 Prime 850W 80 PLUS Gold ATX Power Supply1,803$149Compare
Novexa PW-1502 XT 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,497$259Compare
Teralux PW-1904 Plus 850W 80 PLUS Gold ATX 3.0 Power Supply1,446$99Compare
Novexa PW-5952 Ti 850W 80 PLUS Gold ATX Power Supply1,656$129Compare
Caldera PW-4134 Ti 850W 80 PLUS Gold ATX 3.1 Power Supply1,235$69Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-2578 XT 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/82642 (accessed 2026-10-26).