Hardware Spec Index

Caldera PW-3879 Ultra 550W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW3879-ULTRA · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index902 (Power Supplies scale)
Category rank#42,158
Street price$39
Power550 W (rated)
Performance per dollar23.13
Released2023

Specifications

BrandCaldera
ModelCaldera PW-3879 Ultra
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
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
Teralux PW-3009 Ultra 850W 80 PLUS Gold ATX Power Supply1,981$189Compare
Zephyra PW-2466 Prime 850W 80 PLUS Gold ATX 3.0 Power Supply1,884$159Compare
Caldera PW-1979 XT 550W 80 PLUS Bronze ATX 3.1 Power Supply946$49Compare
Novexa PW-1229 XT 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,646$269Compare
Teralux PW-6384 SE 1000W 80 PLUS Gold ATX 3.1 Power Supply2,127$179Compare
Caldera PW-5045 Ultra 550W 80 PLUS Gold ATX Power Supply783$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-3879 Ultra 550W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/7072765 (accessed 2026-10-19).