Total System Power Consumption
We'd like to cover a few final data points before bringing this article to a close. 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 alone.
Admittedly, this graph may look kinda boring, with relatively small deltas separating the high-end parts. But when you consider the Core i7-980X Extreme has 50% more cores and cache than the Core i7-975 and that it can be 50% faster (or more) with many workloads, the 980X's power consumption appears rather impressive. You get far more performance per watt with the new Core i7-980X Extreme in multi-threaded workloads versus any other CPU.