Hardware Spec Index

Zephyra PW-9958 Prime 850W 80 PLUS Gold ATX 3.1 Power Supply

Power Supplies · Zephyra · SKU PW9958-PRIME · Released 2026 · Updated 2026-10-20

Key facts

Benchmark index1,761 (Power Supplies scale)
Category rank#6,680
Street price$149
Power850 W (rated)
Performance per dollar11.82
Released2026

Specifications

BrandZephyra
ModelZephyra PW-9958 Prime
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan135 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
Vantrel PW-3946 Ultra 850W 80 PLUS Bronze ATX 3.0 Power Supply1,419$89Compare
Teralux PW-5428 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,678$119Compare
Vantrel PW-6382 Ti 750W 80 PLUS Gold ATX 3.1 Power Supply1,447$89Compare
Novexa PW-7211 Prime 650W 80 PLUS Bronze ATX 3.1 Power Supply880$49Compare
Caldera PW-7050 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply1,014$49Compare
Zephyra PW-4009 Core 850W 80 PLUS Gold ATX 3.1 Power Supply1,946$189Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-9958 Prime 850W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/93666631 (accessed 2026-10-20).