Using 64-bit Linux Software To Reduce Power Consumption?

With Ubuntu 16.04 LTS due for release next month, I found it time to do my occasional 32-bit vs. 64-bit Linux OS comparison for showcasing the performance difference of using the 64-bit software on supported hardware. This time around, at a premium member's request, I also did some power consumption monitoring between the 32-bit and 64-bit builds of Ubuntu 16.04 on an Intel laptop/ultrabook...