Not sure if you've seen this or not:
Rampage IV Extreme UEFI Guide for Overclocking
It's a very informative read, but you should start with
post #7. tijgert had a conversation with Raja about using offset, and Raja does a great job of explaining how to set up offset to get your desired voltage.
As for your opening question, I use High LLC and Normal VCore. I don't bother with power-saving features when overclocking, so having the processor run at full clock speed and full voltage all the time doesn't bother me one bit. However, I do know there are people who prefer to leave SpeedStep and the like enabled when overclocked to reduce power consumption, and for that reason there is the option for VID offset.
BTW, I hate being the only one that responds. C'mon people! I'm far from being as knowledgeable as most of you who have posted in here before, so why am I the only one answering questions?
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