Benchmark Results: Overall Power Efficiency
The total time taken for the full efficiency run, including single- and multi-threaded applications, is lower on the Intel machines because of their advantages in the single-threaded section of the test run. AMD’s dual-cores fall behind.
Average power for the full efficiency workload is lower on the AMD quad-core chip than on Intel’s high-speed dual-core processor.
Once again, the total power required is lowest on the Intel systems.
Efficiency-wise, nothing beats the Intel dual-core CPUs. They simply deliver the best performance per watt. However, AMD’s low-power quad-core chip doesn't trail far behind.