Hardware Spec Index

Zephyra PW-8257 SE 550W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW8257-SE · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index1,030 (Power Supplies scale)
Category rank#26,838
Street price$49
Power550 W (rated)
Performance per dollar21.02
Released2022

Specifications

BrandZephyra
ModelZephyra PW-8257 SE
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 factorATX
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
Novexa PW-8194 Core 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,980$399Compare
Zephyra PW-7890 Plus 650W 80 PLUS Bronze ATX Power Supply1,021$49Compare
Caldera PW-6585 Max 850W 80 PLUS Bronze ATX 3.1 Power Supply1,315$79Compare
Teralux PW-3606 Core 850W 80 PLUS Gold ATX Power Supply1,638$109Compare
Novexa PW-4402 Prime 750W 80 PLUS Gold ATX Power Supply1,425$99Compare
Caldera PW-4741 SE 1600W 80 PLUS Titanium ATX Power Supply2,699$369Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8257 SE 550W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/32637850 (accessed 2026-10-24).