We used the WattsUp? Pro meter in these tests. This allowed us to measure power use directly from the wall. This meter also uses a USB cable to connect to a computer and Logger Pro software to graph the readings while we run our tests.
To test total system power use, we used the AIDA64 Stability test to load the CPU, and then we recorded the result.
With dual-socket systems, power use can be rather high when fully loaded. The GA-7PESH3 with E5-2697 V2s did peak out at 342watts. This shows that using E5-2697 V2s has a huge impact on how much power a system uses, and there is a about a 100-watt difference between dual-socket systems and single-socket systems.
That is a large amount of power savings that can save the user a lot of money over the long run.