Hardware Spec Index

Caldera PW-8946 Ultra 650W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW8946-ULTRA · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index760 (Power Supplies scale)
Category rank#34,443
Street price$39
Power650 W (rated)
Performance per dollar19.49
Released2020

Specifications

BrandCaldera
ModelCaldera PW-8946 Ultra
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularitySemi-modular
Fan120 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 16 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty5 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Vantrel PW-1277 Edge 850W 80 PLUS Gold SFX Power Supply1,486$89Compare
Teralux PW-1953 Max 550W 80 PLUS Bronze ATX Power Supply839$39Compare
Caldera PW-6594 Pro 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,803$399Compare
Zephyra PW-4896 Plus 550W 80 PLUS Gold ATX 3.1 Power Supply742$39Compare
Caldera PW-6485 SE 1600W 80 PLUS Titanium ATX Power Supply2,696$349Compare
Vantrel PW-7844 SE 550W 80 PLUS Gold ATX 3.0 Power Supply1,040$59Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8946 Ultra 650W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/7698384 (accessed 2026-10-21).