That sounds kind of like something that you wouldn't even bother putting a switch on the motherboard for if it's so great. Should I Enable both of them or what? And is there a reason for leaving it Disabled?
I myself would like to know whether or not to use them...I know they enable some pretty green lights...but you are right...if they are so great...why must they be enabled? You'd think they would just put this feature on the higher end boards and leave it at that. I did however put them both on and ran some benchmarks and the memory bandwidth and i5 core ran some sick benchmarks compared to other systems with the same chip but different mobos.
Tpu will over clock your system to a stable mode and will change your settings automatically even if you change them. I had issue with that caused my cpu to overheat. Epu engery efficet mode when your not demands a lot out of it.