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AMD Pedestal Server single Opteron processor 4 cores

AMD 1U Rack Server dual Opteron (6100) processors 8-12 cores

AMD 2U Rack Server dual Opteron (6100) processors 8-12 cores

AMD Opteron™ Processor-based
Server Benchmarks 		AMD Platform Power
Savings Estimator 		ACP Whitepaper - The Truth
About Power Consumption