Hardware Spec Index

Zephyra PW-8400 SE 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW8400-SE · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index1,081 (Power Supplies scale)
Category rank#8,859
Street price$49
Power550 W (rated)
Performance per dollar22.06
Released2021

Specifications

BrandZephyra
ModelZephyra PW-8400 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
ModularityNon-modular
Fan135 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
Novexa PW-5663 Ultra 650W 80 PLUS Gold ATX 3.1 Power Supply1,348$89Compare
Caldera PW-5956 Edge 850W 80 PLUS Gold ATX 3.0 Power Supply1,813$139Compare
Novexa PW-9514 SE 1200W 80 PLUS Gold ATX Power Supply2,058$209Compare
Caldera PW-7244 Prime 1300W 80 PLUS Gold ATX 3.1 Power Supply2,435$259Compare
Caldera PW-5406 Ti 650W 80 PLUS Bronze ATX 3.1 Power Supply1,036$49Compare
Zephyra PW-9618 Plus 1000W 80 PLUS Platinum SFX Power Supply2,034$209Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8400 SE 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/4225152 (accessed 2026-10-19).