Hardware Spec Index

Zephyra PW-4355 Pro 550W 80 PLUS Bronze SFX Power Supply

Power Supplies · Zephyra · SKU PW4355-PRO · Released 2023 · Updated 2026-10-23

Key facts

Benchmark index769 (Power Supplies scale)
Category rank#45,755
Street price$39
Power550 W (rated)
Performance per dollar19.72
Released2023

Specifications

BrandZephyra
ModelZephyra PW-4355 Pro
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 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
Caldera PW-1935 Pro 1000W 80 PLUS Titanium SFX Power Supply2,610$269Compare
Zephyra PW-6481 Pro 1000W 80 PLUS Gold ATX 3.0 Power Supply2,494$309Compare
Teralux PW-1345 SE 1600W 80 PLUS Titanium ATX Power Supply2,871$379Compare
Teralux PW-8913 Plus 750W 80 PLUS Gold SFX Power Supply1,432$89Compare
Zephyra PW-5439 Prime 1000W 80 PLUS Gold ATX Power Supply2,212$199Compare
Novexa PW-2001 Ti 850W 80 PLUS Gold ATX Power Supply1,631$109Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-4355 Pro 550W 80 PLUS Bronze SFX Power Supply”, https://vextor7.com/item/9685570 (accessed 2026-10-23).