Hardware Spec Index

Zephyra PW-8539 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Zephyra · SKU PW8539-ULTRA · Released 2024 · Updated 2026-10-19

Key facts

Benchmark index759 (Power Supplies scale)
Category rank#28,400
Street price$39
Power550 W (rated)
Performance per dollar19.46
Released2024

Specifications

BrandZephyra
ModelZephyra PW-8539 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 factorATX
ModularityNon-modular
Fan140 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-5479 Ti 550W 80 PLUS Gold ATX Power Supply1,072$49Compare
Vantrel PW-8856 Ti 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,554$319Compare
Vantrel PW-6291 Edge 1000W 80 PLUS Gold ATX Power Supply2,405$259Compare
Vantrel PW-3472 Ultra 1300W 80 PLUS Gold ATX Power Supply2,570$279Compare
Zephyra PW-3304 Ti 550W 80 PLUS Bronze ATX Power Supply1,083$59Compare
Caldera PW-4082 Prime 850W 80 PLUS Gold SFX Power Supply1,825$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8539 Ultra 550W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/3428366 (accessed 2026-10-19).