Hardware Spec Index

Novexa PW-4791 Ultra 850W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Novexa · SKU PW4791-ULTRA · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index1,255 (Power Supplies scale)
Category rank#44,071
Street price$79
Power850 W (rated)
Performance per dollar15.89
Released2023

Specifications

BrandNovexa
ModelNovexa PW-4791 Ultra
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
Caldera PW-2230 Ti 550W 80 PLUS Bronze ATX 3.0 Power Supply964$49Compare
Caldera PW-6513 Ti 750W 80 PLUS Gold ATX Power Supply1,687$99Compare
Caldera PW-6382 Max 750W 80 PLUS Gold ATX Power Supply1,310$89Compare
Teralux PW-8899 Plus 1200W 80 PLUS Gold ATX 3.1 Power Supply2,627$259Compare
Caldera PW-1859 Edge 1000W 80 PLUS Gold SFX Power Supply2,159$199Compare
Zephyra PW-5598 SE 550W 80 PLUS Bronze ATX 3.1 Power Supply857$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-4791 Ultra 850W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/21824634 (accessed 2026-10-25).