Hardware Spec Index

Zephyra PW-7778 Pro 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW7778-PRO · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index787 (Power Supplies scale)
Category rank#20,144
Street price$39
Power550 W (rated)
Performance per dollar20.18
Released2021

Specifications

BrandZephyra
ModelZephyra PW-7778 Pro
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityNon-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty5 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Teralux PW-9672 XT 1200W 80 PLUS Platinum ATX Power Supply2,644$299Compare
Vantrel PW-2117 SE 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,251$249Compare
Novexa PW-9730 Core 1000W 80 PLUS Gold ATX Power Supply1,898$159Compare
Caldera PW-6140 Ultra 550W 80 PLUS Gold ATX Power Supply941$49Compare
Vantrel PW-1396 Max 1000W 80 PLUS Titanium SFX Power Supply2,402$259Compare
Novexa PW-4681 Max 650W 80 PLUS Gold ATX 3.1 Power Supply985$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-7778 Pro 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/52590901 (accessed 2026-10-19).