Well, just stick with less than 1.45v on the CPU and you'll be fine.
Do you think going with DDR3-1600 RAM will help . right now I have the DDR3-1333 pushed up to 1400Mhz. But I don't think I can push the RAM any higher. Changing the FSB to 350 gets me 3.30 on the CPU but it gets 1400 on the ram , It's stable like this . I just want to know how to get 3.8 safely without cooking the RAM??