I thought the power-saving and green campaign are started of by the CPU makers and thus their reference motherboard, for the stake of image, board-makers will of course join in the fun. But the energy-efficient thing is not going fine with me considering most of the Asus and Bigabyte boards are made to be overclocked.
I am running E2180 at 1.8Ghz at 1.1V with ABIT IP35-E with only Crystal-CPUID.
FSB on the fly? Set-FSB lor.
Multiplier on the Fly? CPUID loh. Can pre-defined voltages and so on, just that I cannot further undervolt in Bios other than the default settings.
No need EPU. Anyway, 1 point taken - the EPU did not switch off the power phrase for P5K unlike the high end model with 8 phrase, since P5K only have 4 phrase.