Hardware Spec Index

Caldera PW-9640 XT 550W 80 PLUS Bronze ATX 3.0 Power Supply

Power Supplies · Caldera · SKU PW9640-XT · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index998 (Power Supplies scale)
Category rank#44,180
Street price$49
Power550 W (rated)
Performance per dollar20.37
Released2023

Specifications

BrandCaldera
ModelCaldera PW-9640 XT
Rated output550 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
Fan140 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
Vantrel PW-7539 Edge 750W 80 PLUS Gold ATX Power Supply1,238$59Compare
Novexa PW-4078 Core 1000W 80 PLUS Gold ATX Power Supply2,020$189Compare
Novexa PW-8769 XT 550W 80 PLUS Gold ATX 3.1 Power Supply984$49Compare
Caldera PW-8588 Pro 650W 80 PLUS Gold ATX 3.1 Power Supply1,084$59Compare
Zephyra PW-8778 Prime 850W 80 PLUS Gold ATX Power Supply1,639$99Compare
Novexa PW-3431 Edge 850W 80 PLUS Gold ATX 3.1 Power Supply1,464$109Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-9640 XT 550W 80 PLUS Bronze ATX 3.0 Power Supply”, https://vextor7.com/item/6430302 (accessed 2026-10-25).