Hardware Spec Index

Zephyra PW-3946 Prime 650W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Zephyra · SKU PW3946-PRIME · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index764 (Power Supplies scale)
Category rank#8,031
Street price$39
Power650 W (rated)
Performance per dollar19.59
Released2022

Specifications

BrandZephyra
ModelZephyra PW-3946 Prime
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Caldera PW-7980 Prime 1000W 80 PLUS Gold ATX 3.1 Power Supply1,766$139Compare
Caldera PW-3762 Plus 1000W 80 PLUS Gold ATX 3.1 Power Supply1,991$209Compare
Caldera PW-3542 Ultra 550W 80 PLUS Gold ATX Power Supply764$39Compare
Vantrel PW-1858 Ultra 1000W 80 PLUS Titanium ATX Power Supply2,218$249Compare
Zephyra PW-9537 Max 1000W 80 PLUS Gold ATX 3.0 Power Supply2,115$219Compare
Zephyra PW-5007 Ti 850W 80 PLUS Gold ATX 3.1 Power Supply1,125$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-3946 Prime 650W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/9751644 (accessed 2026-10-22).