Hardware Spec Index

Zephyra PW-8318 Ultra 650W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW8318-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index1,269 (Power Supplies scale)
Category rank#1,668
Street price$79
Power650 W (rated)
Performance per dollar16.06
Released2019

Specifications

BrandZephyra
ModelZephyra PW-8318 Ultra
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityNon-modular
Fan140 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-4090 Pro 1000W 80 PLUS Gold ATX 3.0 Power Supply2,435$269Compare
Caldera PW-2445 SE 1200W 80 PLUS Platinum ATX Power Supply2,240$239Compare
Zephyra PW-7440 Max 650W 80 PLUS Bronze ATX 3.1 Power Supply1,084$49Compare
Caldera PW-9496 Pro 1000W 80 PLUS Gold ATX 3.1 Power Supply1,793$159Compare
Caldera PW-7862 XT 1000W 80 PLUS Gold ATX 3.0 Power Supply1,995$169Compare
Novexa PW-7067 Core 850W 80 PLUS Gold SFX Power Supply1,710$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-8318 Ultra 650W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/20181092 (accessed 2026-10-21).