Energy consumption (iGPU): Cinebench 11.5 (Max)
The chart below has the maximum power usage during the Cinebench 11.5 benchmark. It's the consumption of the entire system, not just the processor.
The new processors are not only about 10 percent faster in Cinebench 11.5, they're also more efficient. The motherboard and platform also have an influence here, but there's no question that the energy-efficiency has been improved over the previous generation.