Hardware Spec Index

Zephyra PW-5757 Ultra 550W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW5757-ULTRA · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index1,077 (Power Supplies scale)
Category rank#17,832
Street price$49
Power550 W (rated)
Performance per dollar21.98
Released2022

Specifications

BrandZephyra
ModelZephyra PW-5757 Ultra
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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-5319 Ultra 850W 80 PLUS Gold SFX Power Supply1,369$69Compare
Teralux PW-4726 Edge 1600W 80 PLUS Platinum ATX Power Supply2,538$319Compare
Caldera PW-1095 Prime 650W 80 PLUS Bronze ATX Power Supply981$49Compare
Vantrel PW-1402 Ti 650W 80 PLUS Gold ATX Power Supply860$39Compare
Novexa PW-2091 Edge 1300W 80 PLUS Gold ATX Power Supply2,279$279Compare
Teralux PW-2486 Pro 1200W 80 PLUS Gold ATX 3.1 Power Supply2,716$329Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-5757 Ultra 550W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/15801899 (accessed 2026-10-19).