Hardware Spec Index

Novexa PW-3847 Ultra 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Novexa · SKU PW3847-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,104 (Power Supplies scale)
Category rank#4,019
Street price$49
Power550 W (rated)
Performance per dollar22.53
Released2021

Specifications

BrandNovexa
ModelNovexa PW-3847 Ultra
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan135 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
Teralux PW-9728 Max 1200W 80 PLUS Gold ATX 3.0 Power Supply2,205$209Compare
Caldera PW-9108 SE 1000W 80 PLUS Platinum ATX Power Supply2,525$249Compare
Zephyra PW-8101 Plus 1000W 80 PLUS Gold ATX 3.1 Power Supply1,979$159Compare
Novexa PW-8965 Ti 1000W 80 PLUS Gold ATX 3.0 Power Supply1,908$149Compare
Vantrel PW-4785 Ti 1000W 80 PLUS Gold SFX Power Supply2,284$239Compare
Teralux PW-2088 SE 750W 80 PLUS Bronze SFX Power Supply914$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-3847 Ultra 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/9846622 (accessed 2026-10-26).