Hardware Spec Index

Caldera PW-8958 Ultra 650W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW8958-ULTRA · Released 2024 · Updated 2026-10-25

Key facts

Benchmark index1,187 (Power Supplies scale)
Category rank#24,914
Street price$59
Power650 W (rated)
Performance per dollar20.12
Released2024

Specifications

BrandCaldera
ModelCaldera PW-8958 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
Novexa PW-3265 SE 750W 80 PLUS Gold ATX Power Supply1,672$109Compare
Teralux PW-5424 Prime 1300W 80 PLUS Platinum ATX Power Supply2,476$289Compare
Novexa PW-5574 Core 550W 80 PLUS Bronze ATX 3.1 Power Supply1,105$59Compare
Teralux PW-2294 XT 550W 80 PLUS Bronze ATX 3.1 Power Supply861$39Compare
Zephyra PW-7437 Ultra 1000W 80 PLUS Gold ATX Power Supply2,074$159Compare
Vantrel PW-8622 Pro 850W 80 PLUS Gold ATX Power Supply1,578$99Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8958 Ultra 650W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/35309655 (accessed 2026-10-25).