Hardware Spec Index

Caldera PW-6458 Pro 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW6458-PRO · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index1,043 (Power Supplies scale)
Category rank#11,573
Street price$49
Power550 W (rated)
Performance per dollar21.29
Released2019

Specifications

BrandCaldera
ModelCaldera PW-6458 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-1903 SE 1000W 80 PLUS Platinum ATX 3.1 Power Supply1,997$189Compare
Teralux PW-1369 Max 1000W 80 PLUS Gold SFX Power Supply1,761$149Compare
Zephyra PW-3283 Pro 750W 80 PLUS Gold ATX Power Supply1,391$89Compare
Caldera PW-6781 Core 750W 80 PLUS Gold ATX Power Supply1,440$99Compare
Teralux PW-7286 Prime 550W 80 PLUS Gold ATX 3.1 Power Supply1,225$59Compare
Teralux PW-3865 Prime 850W 80 PLUS Platinum ATX 3.0 Power Supply1,889$159Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-6458 Pro 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/694787 (accessed 2026-10-20).