Hardware Spec Index

Novexa PW-1791 Pro 550W 80 PLUS Gold ATX 3.1 Power Supply

Power Supplies · Novexa · SKU PW1791-PRO · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index937 (Power Supplies scale)
Category rank#23,395
Street price$49
Power550 W (rated)
Performance per dollar19.12
Released2024

Specifications

BrandNovexa
ModelNovexa PW-1791 Pro
Rated output550 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-pin1×
Form factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Teralux PW-7858 SE 1000W 80 PLUS Titanium ATX Power Supply2,260$249Compare
Vantrel PW-1008 Max 1300W 80 PLUS Titanium ATX Power Supply2,972$369Compare
Caldera PW-3885 Core 750W 80 PLUS Bronze SFX Power Supply979$39Compare
Caldera PW-8271 Ti 1000W 80 PLUS Gold ATX 3.1 Power Supply1,883$159Compare
Teralux PW-5112 Prime 1000W 80 PLUS Gold ATX Power Supply1,977$149Compare
Teralux PW-4253 Max 1600W 80 PLUS Platinum ATX 3.1 Power Supply2,477$319Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-1791 Pro 550W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/20075662 (accessed 2026-10-20).