Hardware Spec Index

Caldera PW-9661 XT 550W 80 PLUS Gold ATX Power Supply

Power Supplies · Caldera · SKU PW9661-XT · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index1,202 (Power Supplies scale)
Category rank#6,796
Street price$59
Power550 W (rated)
Performance per dollar20.37
Released2019

Specifications

BrandCaldera
ModelCaldera PW-9661 XT
Rated output550 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 12V 2.53
GPU powerNone
PCIe 8-pin2×
Form factorATX
ModularityFully modular
Fan140 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
Caldera PW-9086 XT 1600W 80 PLUS Titanium ATX Power Supply2,980$379Compare
Teralux PW-3306 XT 850W 80 PLUS Gold SFX Power Supply1,461$99Compare
Zephyra PW-8226 Ti 1300W 80 PLUS Titanium ATX Power Supply2,780$369Compare
Caldera PW-9407 Ultra 550W 80 PLUS Bronze ATX 3.0 Power Supply811$39Compare
Zephyra PW-8554 XT 1200W 80 PLUS Titanium ATX 3.0 Power Supply2,540$289Compare
Vantrel PW-5063 Ti 650W 80 PLUS Bronze ATX 3.0 Power Supply982$49Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Caldera PW-9661 XT 550W 80 PLUS Gold ATX Power Supply”, https://vextor7.com/item/554046 (accessed 2026-10-26).