Hardware Spec Index

Caldera PW-2309 Ultra 650W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW2309-ULTRA · Released 2024 · Updated 2026-10-20

Key facts

Benchmark index1,179 (Power Supplies scale)
Category rank#12,025
Street price$59
Power650 W (rated)
Performance per dollar19.98
Released2024

Specifications

BrandCaldera
ModelCaldera PW-2309 Ultra
Rated output650 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-pin1×
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
Zephyra PW-8103 Pro 1200W 80 PLUS Gold ATX Power Supply2,054$209Compare
Vantrel PW-4448 Core 850W 80 PLUS Gold ATX 3.0 Power Supply1,835$149Compare
Novexa PW-6918 Edge 1000W 80 PLUS Gold ATX Power Supply2,108$189Compare
Novexa PW-1904 Plus 1300W 80 PLUS Titanium ATX 3.0 Power Supply2,558$289Compare
Teralux PW-3653 Plus 1000W 80 PLUS Platinum ATX Power Supply2,171$189Compare
Zephyra PW-8270 Ultra 550W 80 PLUS Gold SFX Power Supply784$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-2309 Ultra 650W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/50839280 (accessed 2026-10-20).