Hardware Spec Index

Caldera PW-8518 Prime 550W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW8518-PRIME · Released 2019 · Updated 2026-10-22

Key facts

Benchmark index799 (Power Supplies scale)
Category rank#21,218
Street price$39
Power550 W (rated)
Performance per dollar20.49
Released2019

Specifications

BrandCaldera
ModelCaldera PW-8518 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
ModularitySemi-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-4147 Ti 550W 80 PLUS Gold ATX 3.0 Power Supply783$39Compare
Novexa PW-8693 Ultra 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,263$229Compare
Caldera PW-6958 Max 850W 80 PLUS Gold ATX Power Supply1,686$99Compare
Novexa PW-5697 Ti 750W 80 PLUS Gold ATX 3.1 Power Supply1,491$99Compare
Caldera PW-7298 Ti 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,862$399Compare
Zephyra PW-6381 Max 1000W 80 PLUS Platinum ATX 3.0 Power Supply2,230$219Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8518 Prime 550W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/6769810 (accessed 2026-10-22).