The Cooler Master eXtreme Power Plus 550W ($64.99 list) is a 550-watt power supply designed for use with desktop computers.

This ATX12V V2.3 power supply uses two +12V rails and sports a 20+4–pin main power connector, two 6+2–pin PCI Express power connectors, six SATA power connectors, and three four-pin Molex power connectors.  It is certified for use with either AMD's CrossFireX or Nvidia's SLI multiple–video card technologies.

Cooler Master claims that the eXtreme Power Plus 550W offers more than 70 percent power efficiency at typical load operation, and that the power supply has a Mean Time Between Failures (MTBF) rating of more than 100,000 hours.  It is covered by a two-year limited parts-and-labor warranty.

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