Hardware Spec Index

Zephyra PW-3973 Core 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Zephyra · SKU PW3973-CORE · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index756 (Power Supplies scale)
Category rank#12,417
Street price$39
Power550 W (rated)
Performance per dollar19.38
Released2020

Specifications

BrandZephyra
ModelZephyra PW-3973 Core
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityNon-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
Zephyra PW-5752 XT 1000W 80 PLUS Platinum ATX Power Supply1,991$199Compare
Teralux PW-7562 Plus 1300W 80 PLUS Platinum ATX Power Supply2,462$259Compare
Caldera PW-6664 Edge 550W 80 PLUS Bronze ATX 3.1 Power Supply1,048$49Compare
Teralux PW-1295 Plus 1000W 80 PLUS Titanium ATX 3.1 Power Supply2,441$269Compare
Zephyra PW-9130 Edge 650W 80 PLUS Gold ATX Power Supply943$49Compare
Caldera PW-5223 Core 1300W 80 PLUS Gold ATX 3.0 Power Supply2,534$249Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Zephyra PW-3973 Core 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/1292671 (accessed 2026-10-20).