Hardware Spec Index

Caldera PW-5503 Core 850W 80 PLUS Platinum ATX Power Supply

Power Supplies · Caldera · SKU PW5503-CORE · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index2,046 (Power Supplies scale)
Category rank#26,571
Street price$159
Power850 W (rated)
Performance per dollar12.87
Released2021

Specifications

BrandCaldera
ModelCaldera PW-5503 Core
Rated output850 W continuous
Efficiency80 PLUS Platinum (92% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin3×
Form factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty10 years

Related guides

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

Similar Power Supplies

ModelBenchmarkPriceCompare
Zephyra PW-3104 Ultra 1000W 80 PLUS Gold ATX 3.0 Power Supply1,909$169Compare
Caldera PW-6944 Ultra 850W 80 PLUS Gold ATX Power Supply1,825$129Compare
Zephyra PW-6943 Plus 1300W 80 PLUS Platinum ATX Power Supply2,675$369Compare
Novexa PW-9661 Plus 550W 80 PLUS Bronze ATX Power Supply731$39Compare
Vantrel PW-7809 Ultra 850W 80 PLUS Gold ATX Power Supply1,883$139Compare
Vantrel PW-4484 Edge 1600W 80 PLUS Platinum ATX 3.1 Power Supply2,979$369Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-5503 Core 850W 80 PLUS Platinum ATX Power Supply”, https://vextor7.com/item/85542373 (accessed 2026-10-25).