Hardware Spec Index

Caldera PW-6681 XT 650W 80 PLUS Bronze ATX 3.1 Power Supply

Power Supplies · Caldera · SKU PW6681-XT · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index1,093 (Power Supplies scale)
Category rank#38,412
Street price$49
Power650 W (rated)
Performance per dollar22.31
Released2026

Specifications

BrandCaldera
ModelCaldera PW-6681 XT
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
Fan140 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
Teralux PW-6339 Core 650W 80 PLUS Gold ATX 3.0 Power Supply1,259$59Compare
Caldera PW-1659 Pro 1000W 80 PLUS Gold SFX Power Supply2,251$199Compare
Teralux PW-7120 Max 1000W 80 PLUS Platinum ATX 3.1 Power Supply2,150$189Compare
Novexa PW-5326 SE 1200W 80 PLUS Platinum ATX 3.1 Power Supply2,591$289Compare
Vantrel PW-4904 Edge 750W 80 PLUS Gold ATX 3.1 Power Supply1,138$59Compare
Novexa PW-2234 XT 650W 80 PLUS Bronze SFX Power Supply1,065$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-6681 XT 650W 80 PLUS Bronze ATX 3.1 Power Supply”, https://vextor7.com/item/60021039 (accessed 2026-10-25).