Hardware Spec Index

Zephyra PW-8477 Ultra 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Zephyra · SKU PW8477-ULTRA · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index1,497 (Power Supplies scale)
Category rank#33,721
Street price$99
Power850 W (rated)
Performance per dollar15.12
Released2020

Specifications

BrandZephyra
ModelZephyra PW-8477 Ultra
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty10 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Novexa PW-2962 Ultra 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,111$229Compare
Zephyra PW-7713 Edge 650W 80 PLUS Bronze ATX Power Supply1,399$79Compare
Caldera PW-5733 Prime 1000W 80 PLUS Titanium ATX 3.1 Power Supply2,325$239Compare
Teralux PW-8518 Ultra 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,696$309Compare
Vantrel PW-3645 Pro 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,442$309Compare
Novexa PW-9863 SE 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,980$369Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8477 Ultra 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/7861377 (accessed 2026-10-21).