Hardware Spec Index

Caldera PW-1891 Pro 650W 80 PLUS Gold ATX 3.1 Power Supply

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

Key facts

Benchmark index1,203 (Power Supplies scale)
Category rank#43,846
Street price$69
Power650 W (rated)
Performance per dollar17.43
Released2026

Specifications

BrandCaldera
ModelCaldera PW-1891 Pro
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.1 / PCIe CEM 5.1
GPU power1× 12V-2x6 (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully 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
Teralux PW-9213 Plus 1000W 80 PLUS Gold ATX Power Supply1,680$129Compare
Zephyra PW-5497 Ti 1200W 80 PLUS Titanium ATX Power Supply2,625$309Compare
Vantrel PW-5818 Max 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,800$379Compare
Novexa PW-7171 Prime 550W 80 PLUS Gold SFX Power Supply915$39Compare
Zephyra PW-2180 Prime 1000W 80 PLUS Gold ATX Power Supply2,129$199Compare
Zephyra PW-3777 Pro 750W 80 PLUS Bronze ATX Power Supply1,009$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-1891 Pro 650W 80 PLUS Gold ATX 3.1 Power Supply”, https://vextor7.com/item/861372 (accessed 2026-10-21).