Hardware Spec Index

Novexa PW-4578 Pro 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Novexa · SKU PW4578-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index1,180 (Power Supplies scale)
Category rank#17,974
Street price$69
Power850 W (rated)
Performance per dollar17.10
Released2021

Specifications

BrandNovexa
ModelNovexa PW-4578 Pro
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Zephyra PW-9218 Pro 550W 80 PLUS Bronze SFX Power Supply896$49Compare
Zephyra PW-5124 Pro 550W 80 PLUS Bronze ATX 3.0 Power Supply1,044$49Compare
Novexa PW-8929 Prime 1000W 80 PLUS Titanium ATX 3.1 Power Supply2,367$249Compare
Teralux PW-3512 Pro 1300W 80 PLUS Titanium ATX Power Supply2,805$399Compare
Teralux PW-1294 Max 1300W 80 PLUS Platinum ATX Power Supply2,705$319Compare
Caldera PW-6421 Pro 1000W 80 PLUS Gold ATX Power Supply2,308$229Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-4578 Pro 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/74895823 (accessed 2026-10-22).