Hardware Spec Index

Caldera PW-8911 Ultra 650W 80 PLUS Bronze ATX Power Supply

Power Supplies · Caldera · SKU PW8911-ULTRA · Released 2020 · Updated 2026-10-18

Key facts

Benchmark index987 (Power Supplies scale)
Category rank#11,264
Street price$49
Power650 W (rated)
Performance per dollar20.14
Released2020

Specifications

BrandCaldera
ModelCaldera PW-8911 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
Zephyra PW-2906 Prime 850W 80 PLUS Gold ATX 3.0 Power Supply1,949$149Compare
Novexa PW-4771 Pro 1200W 80 PLUS Titanium ATX 3.1 Power Supply2,206$259Compare
Vantrel PW-7754 Prime 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,320$279Compare
Caldera PW-8191 XT 750W 80 PLUS Bronze ATX Power Supply1,030$59Compare
Teralux PW-7233 Ultra 1600W 80 PLUS Titanium ATX 3.1 Power Supply2,900$349Compare
Zephyra PW-3558 Prime 1300W 80 PLUS Titanium ATX 3.1 Power Supply2,664$289Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-8911 Ultra 650W 80 PLUS Bronze ATX Power Supply”, https://vextor7.com/item/4378552 (accessed 2026-10-18).