Hardware Spec Index

Caldera PW-9791 Max 550W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW9791-MAX · Released 2023 · Updated 2026-10-19

Key facts

Benchmark index787 (Power Supplies scale)
Category rank#709
Street price$39
Power550 W (rated)
Performance per dollar20.18
Released2023

Specifications

BrandCaldera
ModelCaldera PW-9791 Max
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-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
Zephyra PW-3985 Edge 850W 80 PLUS Gold ATX Power Supply1,380$89Compare
Zephyra PW-8806 Plus 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,820$399Compare
Caldera PW-9873 Plus 850W 80 PLUS Gold ATX Power Supply1,882$169Compare
Vantrel PW-6818 Max 850W 80 PLUS Gold ATX 3.0 Power Supply1,602$99Compare
Teralux PW-5400 Ti 750W 80 PLUS Bronze ATX 3.1 Power Supply1,482$89Compare
Zephyra PW-2636 Prime 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,451$269Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-9791 Max 550W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/17907657 (accessed 2026-10-19).