Hardware Spec Index

Caldera PW-8953 Ultra 850W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW8953-ULTRA · Released 2022 · Updated 2026-10-21

Key facts

Benchmark index1,524 (Power Supplies scale)
Category rank#19,947
Street price$79
Power850 W (rated)
Performance per dollar19.29
Released2022

Specifications

BrandCaldera
ModelCaldera PW-8953 Ultra
Rated output850 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Zephyra PW-3919 Edge 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,978$399Compare
Novexa PW-6005 Core 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,036$189Compare
Novexa PW-9491 Core 850W 80 PLUS Gold ATX 3.0 Power Supply1,455$99Compare
Zephyra PW-8869 SE 1600W 80 PLUS Platinum ATX Power Supply2,969$339Compare
Zephyra PW-8560 Core 550W 80 PLUS Bronze ATX Power Supply797$39Compare
Novexa PW-5019 Core 550W 80 PLUS Bronze SFX Power Supply802$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8953 Ultra 850W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/6285348 (accessed 2026-10-21).