Hardware Spec Index

Caldera PW-1891 Max 650W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW1891-MAX · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index770 (Power Supplies scale)
Category rank#9,117
Street price$39
Power650 W (rated)
Performance per dollar19.74
Released2019

Specifications

BrandCaldera
ModelCaldera PW-1891 Max
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 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
Vantrel PW-3198 Ti 1200W 80 PLUS Gold ATX 3.0 Power Supply2,120$199Compare
Zephyra PW-8230 Pro 1200W 80 PLUS Gold ATX 3.1 Power Supply2,134$219Compare
Novexa PW-5868 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,770$169Compare
Vantrel PW-9678 Ti 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,733$359Compare
Caldera PW-7063 Ti 1200W 80 PLUS Gold ATX 3.0 Power Supply2,576$279Compare
Vantrel PW-1243 SE 1000W 80 PLUS Gold ATX Power Supply1,629$129Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1891 Max 650W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/1984239 (accessed 2026-10-21).