Hardware Spec Index

Caldera PW-2591 Max 850W 80 PLUS Platinum ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW2591-MAX · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index2,056 (Power Supplies scale)
Category rank#2,355
Street price$179
Power850 W (rated)
Performance per dollar11.49
Released2023

Specifications

BrandCaldera
ModelCaldera PW-2591 Max
Rated output850 W continuous
Efficiency80 PLUS Platinum (92% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin2×
Form factorATX
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
Caldera PW-6852 Edge 1300W 80 PLUS Gold ATX 3.0 Power Supply2,401$259Compare
Novexa PW-9389 SE 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,468$269Compare
Novexa PW-5183 SE 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,766$299Compare
Zephyra PW-4930 Plus 850W 80 PLUS Gold ATX 3.1 Power Supply1,635$129Compare
Zephyra PW-2177 XT 750W 80 PLUS Gold ATX Power Supply1,557$109Compare
Novexa PW-6193 Core 850W 80 PLUS Gold ATX Power Supply1,505$99Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-2591 Max 850W 80 PLUS Platinum ATX 3.0 Power Supply”, https://vextor7.com/item/82325833 (accessed 2026-10-25).