check the link in my sig for the e6320..I had to use 1.34vcore for 2.8ghz to be stable...thats not a lot at all..Intel spec is 1.35v max. Hell, I run 1.52-1.58vcore on my e6700..its fine, as long as you keep it cool.
Heres my orthos, to compare..10min.
Attachment 52219

Heres my orthos, to compare..10min.
Attachment 52219