Hardware Spec Index

Caldera PW-1273 Ultra 850W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW1273-ULTRA · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,279 (Power Supplies scale)
Category rank#12,234
Street price$79
Power850 W (rated)
Performance per dollar16.19
Released2022

Specifications

BrandCaldera
ModelCaldera PW-1273 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 factorATX
ModularityFully modular
Fan140 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Novexa PW-7175 Core 1200W 80 PLUS Gold ATX 3.0 Power Supply2,124$199Compare
Vantrel PW-4185 Pro 850W 80 PLUS Gold ATX 3.0 Power Supply1,603$109Compare
Zephyra PW-5326 Ultra 1200W 80 PLUS Gold ATX 3.1 Power Supply2,213$229Compare
Novexa PW-2650 Edge 1300W 80 PLUS Platinum ATX Power Supply2,606$299Compare
Caldera PW-6878 Plus 650W 80 PLUS Bronze ATX Power Supply1,034$59Compare
Novexa PW-4659 Core 650W 80 PLUS Gold ATX Power Supply1,011$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1273 Ultra 850W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/4421170 (accessed 2026-10-21).