Hardware Spec Index

Caldera PW-8991 SE 850W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW8991-SE · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index1,336 (Power Supplies scale)
Category rank#43,618
Street price$79
Power850 W (rated)
Performance per dollar16.91
Released2025

Specifications

BrandCaldera
ModelCaldera PW-8991 SE
Rated output850 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan135 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
Novexa PW-9613 Prime 850W 80 PLUS Gold ATX Power Supply2,008$159Compare
Caldera PW-2912 Ultra 1000W 80 PLUS Titanium SFX Power Supply2,228$269Compare
Novexa PW-4864 Pro 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,434$289Compare
Caldera PW-5149 Plus 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,186$169Compare
Zephyra PW-2867 Ti 1000W 80 PLUS Platinum ATX Power Supply2,035$199Compare
Vantrel PW-7313 Plus 1200W 80 PLUS Platinum ATX Power Supply2,731$349Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8991 SE 850W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/3338730 (accessed 2026-10-25).