Hardware Spec Index

Caldera PW-5055 Ultra 850W 80 PLUS Gold SFX Power Supply

Power Supplies · Caldera · SKU PW5055-ULTRA · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index1,720 (Power Supplies scale)
Category rank#23,779
Street price$119
Power850 W (rated)
Performance per dollar14.45
Released2022

Specifications

BrandCaldera
ModelCaldera PW-5055 Ultra
Rated output850 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin2×
Form factorSFX-L
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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-9150 Core 1600W 80 PLUS Platinum ATX 3.0 Power Supply2,966$339Compare
Novexa PW-4091 Pro 850W 80 PLUS Gold ATX Power Supply1,811$139Compare
Teralux PW-1850 Edge 850W 80 PLUS Gold ATX Power Supply1,664$139Compare
Novexa PW-9342 Plus 850W 80 PLUS Gold ATX Power Supply1,426$79Compare
Novexa PW-2801 Core 750W 80 PLUS Gold SFX Power Supply1,304$69Compare
Vantrel PW-2209 Ultra 550W 80 PLUS Bronze ATX 3.0 Power Supply1,176$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-5055 Ultra 850W 80 PLUS Gold SFX Power Supply”, https://vextor7.com/item/4872744 (accessed 2026-10-22).