Hardware Spec Index

Caldera PW-1903 Edge 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW1903-EDGE · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index1,119 (Power Supplies scale)
Category rank#37,352
Street price$59
Power550 W (rated)
Performance per dollar18.97
Released2020

Specifications

BrandCaldera
ModelCaldera PW-1903 Edge
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
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Zephyra PW-4150 XT 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,708$339Compare
Novexa PW-3017 Pro 1000W 80 PLUS Gold ATX Power Supply1,965$149Compare
Novexa PW-8179 SE 1000W 80 PLUS Gold ATX 3.1 Power Supply1,875$129Compare
Vantrel PW-2976 Ti 1600W 80 PLUS Platinum ATX Power Supply2,795$369Compare
Vantrel PW-7698 Max 850W 80 PLUS Gold ATX 3.1 Power Supply1,440$89Compare
Teralux PW-7050 Edge 550W 80 PLUS Bronze SFX Power Supply847$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1903 Edge 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/19086745 (accessed 2026-10-18).