The E Power Tiger 550W Power Supply is a nickel plated modular PSU, with one low noise 120mm fan.  It may not be above the 80% efficiency mark, but it is certainly more efficient than a lot of the older PSUs you still find in people’s systems.
“E Power Technology has released two new power supplies in their Silent Engine series. The new Tiger 550W and Tiger 650W Silent Engine power supplies feature dual +12V outputs, dual PCI-Express connectors, and a quiet, variable speed fan. Both Tiger power supplies are fully modular and support Intel, AMD, multiprocessor and dual core motherboards.”

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