http://metku.net/index.html?sect=vie...p800/index_eng

That page will tell you everything you need to know.

As far as gaining speed... Well, it made my system more stable at higher clock speeds. Before, my voltage was all over the place when my system was running @ 3750... now, it doesn't move nearly as much. So, I suppose allowing you to run more reliably @ higher speeds is an increase depending on how you look at it.