Hardware Spec Index

Novexa PW-4451 Plus 850W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Novexa · SKU PW4451-PLUS · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index1,612 (Power Supplies scale)
Category rank#41,643
Street price$139
Power850 W (rated)
Performance per dollar11.60
Released2023

Specifications

BrandNovexa
ModelNovexa PW-4451 Plus
Rated output850 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-pin2×
Form factorATX
ModularityFully modular
Fan135 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
Teralux PW-3340 Prime 1000W 80 PLUS Titanium ATX 3.0 Power Supply2,274$229Compare
Novexa PW-8320 XT 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,651$339Compare
Vantrel PW-7391 Plus 1200W 80 PLUS Titanium ATX 3.0 Power Supply2,690$309Compare
Caldera PW-9687 XT 1000W 80 PLUS Platinum ATX Power Supply2,030$159Compare
Zephyra PW-3684 Ti 1000W 80 PLUS Gold ATX Power Supply1,823$159Compare
Zephyra PW-7918 Core 650W 80 PLUS Gold ATX Power Supply1,172$69Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-4451 Plus 850W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/7075314 (accessed 2026-10-20).