Yeah, but AMD is always gonna give a very a conservative number, it's just the nature of the business. I've done a ton of research and it seems like the best and most knowledgeable overclockers say 1.4V daily is safe on top end air cooling/AIO/custom water loop, or 1.45V on something like chilled water.
I'm finishing up a final, completed build post (leaving this one up for people who want to know about the stock cooler) that I'm gonna keep updated with overclocking results and temps if you're curious. Let me just say this to whet your appetite: 19C cooler at idle, 58C max after an hour of stress testing at 3.9GHz and I think I can still lower the voltage.
What!?!? 58C Max! Awesome! Were you able to maintain that OC with a lower voltage?