Total System Power Consumption
Throughout all of our benchmarking and testing, we monitored how much power our test systems consumed using a power meter. Our goal was to give you all an idea as to how much power each configuration used while idling and while under a heavy workload. Please keep in mind that we were testing total system power consumption at the outlet here, not just the power being drawn by the processors and motherboards alone.
Depending on their configuration, motherboards based on the AMD 890GX chipset should consume similar amounts of power to the older 785G. As you can see here, the Asus board used only slightly more power than the 785G under both idle and load condidtions. The Gigabyte board, however, consumed measurably more power than either, most likely due to higher default voltages being assigned to some core components via the BIOS.