Hardware Spec Index

Caldera PW-1066 Pro 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW1066-PRO · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index733 (Power Supplies scale)
Category rank#2,820
Street price$39
Power550 W (rated)
Performance per dollar18.79
Released2021

Specifications

BrandCaldera
ModelCaldera PW-1066 Pro
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
Fan140 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-7777 Prime 550W 80 PLUS Bronze ATX Power Supply754$39Compare
Caldera PW-8770 Prime 850W 80 PLUS Bronze ATX 3.0 Power Supply1,240$69Compare
Vantrel PW-5148 Core 1000W 80 PLUS Platinum ATX Power Supply1,980$189Compare
Vantrel PW-4583 Max 1000W 80 PLUS Gold SFX Power Supply2,020$219Compare
Zephyra PW-7954 Ti 850W 80 PLUS Gold ATX Power Supply1,222$69Compare
Zephyra PW-5764 Pro 1200W 80 PLUS Gold ATX Power Supply2,365$239Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1066 Pro 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/83352782 (accessed 2026-10-21).