Metric for server energy efficiency

AMD, EPA and Sun are working together to define a metric to compare the energy efficency for servers. Perhaps this will end the brute-force-tactics (mooooooore frequency, moooooore) in server design and benchmarketing with unrealistic configuration (more than thousand disks for a good TPC-C-Benchmark will ruin your energy efficiency benchmark ).
Perhaps Sun rides with the UltraSPARC T1 on the first wave of an idea, whose time has come.