Hardware Spec Index

Novexa PW-8403 Pro 850W 80 PLUS Gold ATX 3.1 Power Supply

Power Supplies · Novexa · SKU PW8403-PRO · Released 2025 · Updated 2026-10-18

Key facts

Benchmark index1,457 (Power Supplies scale)
Category rank#10,458
Street price$79
Power850 W (rated)
Performance per dollar18.44
Released2025

Specifications

BrandNovexa
ModelNovexa PW-8403 Pro
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
Fan120 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
Vantrel PW-2577 Max 1300W 80 PLUS Titanium ATX Power Supply2,734$329Compare
Caldera PW-5169 Plus 650W 80 PLUS Gold SFX Power Supply1,318$79Compare
Zephyra PW-1137 Pro 1300W 80 PLUS Platinum ATX 3.1 Power Supply2,845$369Compare
Caldera PW-9289 Max 1000W 80 PLUS Platinum ATX 3.0 Power Supply2,211$199Compare
Zephyra PW-4485 Plus 750W 80 PLUS Gold SFX Power Supply1,152$59Compare
Caldera PW-4417 Plus 650W 80 PLUS Bronze ATX 3.0 Power Supply846$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-8403 Pro 850W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/12349677 (accessed 2026-10-18).