Hardware Spec Index

Caldera PW-1805 Prime 550W 80 PLUS Bronze SFX Power Supply

Power Supplies · Caldera · SKU PW1805-PRIME · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index857 (Power Supplies scale)
Category rank#2,353
Street price$39
Power550 W (rated)
Performance per dollar21.97
Released2019

Specifications

BrandCaldera
ModelCaldera PW-1805 Prime
Rated output550 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorSFX-L
ModularitySemi-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
Teralux PW-5549 Ti 1200W 80 PLUS Platinum ATX 3.0 Power Supply2,538$309Compare
Teralux PW-1229 Ti 1000W 80 PLUS Gold ATX 3.0 Power Supply2,197$189Compare
Zephyra PW-8485 Prime 1600W 80 PLUS Platinum ATX 3.0 Power Supply2,469$299Compare
Novexa PW-1351 Pro 650W 80 PLUS Gold ATX 3.0 Power Supply1,192$59Compare
Caldera PW-2747 Pro 1000W 80 PLUS Gold ATX Power Supply1,859$129Compare
Vantrel PW-4890 Plus 1000W 80 PLUS Gold ATX 3.1 Power Supply1,748$139Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1805 Prime 550W 80 PLUS Bronze SFX Power Supply”, https://vextor7.com/item/478994 (accessed 2026-10-20).