Hardware Spec Index

Caldera PW-4055 Pro 550W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW4055-PRO · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index1,097 (Power Supplies scale)
Category rank#48,227
Street price$59
Power550 W (rated)
Performance per dollar18.59
Released2021

Specifications

BrandCaldera
ModelCaldera PW-4055 Pro
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully 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
Novexa PW-9708 Prime 850W 80 PLUS Gold ATX Power Supply1,487$89Compare
Zephyra PW-5667 Prime 550W 80 PLUS Gold ATX 3.1 Power Supply767$39Compare
Caldera PW-2858 XT 650W 80 PLUS Bronze ATX 3.0 Power Supply817$39Compare
Teralux PW-8236 Ti 1000W 80 PLUS Gold ATX 3.1 Power Supply1,851$159Compare
Vantrel PW-5409 Plus 850W 80 PLUS Gold ATX 3.1 Power Supply1,798$149Compare
Caldera PW-9973 SE 1200W 80 PLUS Gold ATX 3.1 Power Supply2,606$289Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-4055 Pro 550W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/30456362 (accessed 2026-10-22).