Hardware Spec Index

Zephyra PW-5123 Ultra 550W 80 PLUS Bronze SFX Power Supply

Power Supplies · Zephyra · SKU PW5123-ULTRA · Released 2025 · Updated 2026-10-22

Key facts

Benchmark index804 (Power Supplies scale)
Category rank#47,366
Street price$39
Power550 W (rated)
Performance per dollar20.62
Released2025

Specifications

BrandZephyra
ModelZephyra PW-5123 Ultra
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin1×
Form factorSFX-L
ModularitySemi-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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-6482 Max 750W 80 PLUS Gold ATX Power Supply1,530$99Compare
Vantrel PW-6975 Core 1200W 80 PLUS Titanium ATX 3.0 Power Supply2,429$279Compare
Vantrel PW-4720 Edge 1000W 80 PLUS Platinum ATX 3.0 Power Supply2,137$209Compare
Vantrel PW-1050 Core 850W 80 PLUS Gold ATX 3.0 Power Supply1,467$109Compare
Teralux PW-8511 Ultra 1200W 80 PLUS Platinum ATX Power Supply2,307$269Compare
Caldera PW-1421 Edge 750W 80 PLUS Bronze ATX 3.1 Power Supply1,008$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-5123 Ultra 550W 80 PLUS Bronze SFX Power Supply”, https://vextor7.com/item/20103639 (accessed 2026-10-22).