I was trying but always do the same thing.
The procesor start to warm up until the 50 degrees and hang.
I don't know the exact voltage, but in the default settings
say 1,75 and 3,4 (core & i/o)
I try to underclock but, seems to be protected, and it does not let modify the frequency.
I read in the amd and a-bit webs but found nothing.