Hardware Spec Index

Zephyra PW-5491 Ultra 550W 80 PLUS Gold SFX Power Supply

Power Supplies · Zephyra · SKU PW5491-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index1,186 (Power Supplies scale)
Category rank#27,424
Street price$59
Power550 W (rated)
Performance per dollar20.10
Released2020

Specifications

BrandZephyra
ModelZephyra PW-5491 Ultra
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorSFX-L
ModularityFully 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
Zephyra PW-5256 Core 1000W 80 PLUS Titanium ATX Power Supply2,462$259Compare
Teralux PW-1094 Edge 650W 80 PLUS Gold ATX Power Supply1,266$79Compare
Teralux PW-8666 Edge 550W 80 PLUS Bronze ATX Power Supply791$39Compare
Caldera PW-9357 Core 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,773$309Compare
Vantrel PW-5983 Ti 1000W 80 PLUS Gold ATX 3.1 Power Supply2,099$179Compare
Teralux PW-8801 SE 1200W 80 PLUS Gold ATX 3.0 Power Supply2,402$319Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-5491 Ultra 550W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/62815838 (accessed 2026-10-23).