Hardware Spec Index

Caldera PW-9458 Prime 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW9458-PRIME · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index1,037 (Power Supplies scale)
Category rank#36,775
Street price$59
Power550 W (rated)
Performance per dollar17.58
Released2019

Specifications

BrandCaldera
ModelCaldera PW-9458 Prime
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
Fan120 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
Vantrel PW-4288 Pro 650W 80 PLUS Bronze ATX 3.1 Power Supply877$49Compare
Zephyra PW-5225 Ultra 1300W 80 PLUS Titanium ATX Power Supply2,377$249Compare
Caldera PW-5439 Pro 550W 80 PLUS Bronze ATX Power Supply803$39Compare
Teralux PW-9049 Prime 1200W 80 PLUS Gold ATX Power Supply2,603$319Compare
Vantrel PW-4681 Pro 650W 80 PLUS Bronze SFX Power Supply1,022$49Compare
Novexa PW-3568 Plus 650W 80 PLUS Gold ATX 3.0 Power Supply1,214$69Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-9458 Prime 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/189151 (accessed 2026-10-19).