Hardware Spec Index

Novexa PW-1661 Pro 550W 80 PLUS Gold SFX Power Supply

Power Supplies · Novexa · SKU PW1661-PRO · Released 2025 · Updated 2026-10-26

Key facts

Benchmark index1,195 (Power Supplies scale)
Category rank#41,252
Street price$59
Power550 W (rated)
Performance per dollar20.25
Released2025

Specifications

BrandNovexa
ModelNovexa PW-1661 Pro
Rated output550 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-pin1×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Caldera PW-5794 Max 550W 80 PLUS Bronze ATX 3.1 Power Supply998$49Compare
Novexa PW-3477 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply906$39Compare
Vantrel PW-7768 Core 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,738$379Compare
Caldera PW-6116 Pro 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,807$339Compare
Zephyra PW-5186 Prime 1000W 80 PLUS Gold SFX Power Supply2,266$239Compare
Vantrel PW-7815 Edge 1200W 80 PLUS Platinum ATX Power Supply2,347$269Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-1661 Pro 550W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/76790358 (accessed 2026-10-26).