Hardware Spec Index

Caldera PW-9991 Prime 650W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW9991-PRIME · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index974 (Power Supplies scale)
Category rank#30,633
Street price$49
Power650 W (rated)
Performance per dollar19.88
Released2022

Specifications

BrandCaldera
ModelCaldera PW-9991 Prime
Rated output650 W continuous
Efficiency80 PLUS Bronze (85% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityNon-modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 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
Zephyra PW-3940 Plus 1200W 80 PLUS Platinum ATX Power Supply2,197$229Compare
Novexa PW-6178 Ti 850W 80 PLUS Gold SFX Power Supply1,127$59Compare
Caldera PW-8026 SE 1000W 80 PLUS Gold ATX 3.1 Power Supply1,870$159Compare
Teralux PW-1015 Core 1200W 80 PLUS Platinum ATX Power Supply2,667$339Compare
Caldera PW-1730 Ultra 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,839$309Compare
Teralux PW-1610 Max 550W 80 PLUS Bronze ATX Power Supply860$39Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-9991 Prime 650W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/4593715 (accessed 2026-10-24).