Hardware Spec Index

Novexa PW-3921 Plus 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Novexa · SKU PW3921-PLUS · Released 2019 · Updated 2026-10-24

Key facts

Benchmark index1,827 (Power Supplies scale)
Category rank#6,511
Street price$149
Power850 W (rated)
Performance per dollar12.26
Released2019

Specifications

BrandNovexa
ModelNovexa PW-3921 Plus
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
Warranty10 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Vantrel PW-8610 Pro 650W 80 PLUS Gold ATX 3.1 Power Supply1,165$69Compare
Zephyra PW-4699 Core 1600W 80 PLUS Titanium ATX 3.0 Power Supply2,750$339Compare
Vantrel PW-6846 SE 750W 80 PLUS Gold SFX Power Supply985$49Compare
Teralux PW-9406 Pro 850W 80 PLUS Gold ATX Power Supply1,679$119Compare
Teralux PW-9626 Pro 750W 80 PLUS Gold ATX 3.0 Power Supply1,418$89Compare
Novexa PW-4349 Ultra 650W 80 PLUS Bronze ATX 3.0 Power Supply806$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-3921 Plus 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/19101985 (accessed 2026-10-24).