Look at this thread.
http://www.tech-forums.net/pc/search...earchid=352941
Similar chip as yours and hes @ 3.3 on the first page with 1.39 vcore.
I think maybe 1.45v core and 3.4 should be ok (also on the first page with the same that clock). But as you can see from reading onwards that he is @ 3.8 with 1.77 vcore.