Hardware Spec Index

Caldera PW-8591 Pro 1000W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW8591-PRO · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index1,918 (Power Supplies scale)
Category rank#32,955
Street price$139
Power1000 W (rated)
Performance per dollar13.80
Released2019

Specifications

BrandCaldera
ModelCaldera PW-8591 Pro
Rated output1,000 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin4×
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
Vantrel PW-2934 Edge 550W 80 PLUS Gold SFX Power Supply1,024$49Compare
Caldera PW-7069 Prime 1600W 80 PLUS Titanium ATX Power Supply2,693$369Compare
Novexa PW-3039 Plus 1200W 80 PLUS Titanium ATX Power Supply2,603$349Compare
Caldera PW-6924 XT 1000W 80 PLUS Platinum ATX 3.0 Power Supply2,196$249Compare
Zephyra PW-3691 Plus 750W 80 PLUS Gold SFX Power Supply1,259$69Compare
Novexa PW-1008 Plus 1000W 80 PLUS Platinum ATX Power Supply1,989$169Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8591 Pro 1000W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/82945783 (accessed 2026-10-21).