Hardware Spec Index

Zephyra PW-4639 SE 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW4639-SE · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index830 (Power Supplies scale)
Category rank#42,105
Street price$39
Power550 W (rated)
Performance per dollar21.28
Released2019

Specifications

BrandZephyra
ModelZephyra PW-4639 SE
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan140 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
Caldera PW-1118 Max 750W 80 PLUS Bronze ATX Power Supply1,234$59Compare
Zephyra PW-5657 Edge 1000W 80 PLUS Titanium ATX 3.1 Power Supply2,215$219Compare
Zephyra PW-5782 Pro 1000W 80 PLUS Platinum ATX Power Supply2,408$259Compare
Novexa PW-7595 Pro 1000W 80 PLUS Titanium SFX Power Supply2,134$239Compare
Caldera PW-1435 Plus 1200W 80 PLUS Gold ATX Power Supply2,058$239Compare
Vantrel PW-6713 Ultra 1000W 80 PLUS Gold ATX 3.1 Power Supply2,175$199Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-4639 SE 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/19081739 (accessed 2026-10-19).