Hardware Spec Index

Zephyra PW-8818 Prime 850W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW8818-PRIME · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,431 (Power Supplies scale)
Category rank#5,777
Street price$79
Power850 W (rated)
Performance per dollar18.11
Released2022

Specifications

BrandZephyra
ModelZephyra PW-8818 Prime
Rated output850 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-pin2×
Form factorATX
ModularityNon-modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Teralux PW-3308 SE 1000W 80 PLUS Gold ATX 3.0 Power Supply1,821$149Compare
Novexa PW-9367 Core 850W 80 PLUS Gold ATX 3.1 Power Supply1,660$139Compare
Caldera PW-4247 Pro 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,449$229Compare
Caldera PW-5980 Plus 650W 80 PLUS Bronze SFX Power Supply843$39Compare
Zephyra PW-5420 Max 1200W 80 PLUS Gold ATX 3.0 Power Supply2,317$269Compare
Vantrel PW-5485 Prime 850W 80 PLUS Platinum SFX Power Supply1,829$179Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8818 Prime 850W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/874181 (accessed 2026-10-21).