I just wrote a long paracraph on voltages for AMD chips but my browser crashed and I lost it. AMD quotes the max case temperature for its chips which is 65°C from memory, not maximum junction temperature which would be like 95+. As for daily driver voltages, I needed 1.35V(stock) to reach 3.4GHz, and 1.475V to reach 3.8GHz. I wouldn't go higher than 1.45V for daily driver if you have aftermarket cooling. With the stock cooler, I wouldn't even overvolt as it is one of the worst coolers I've every used (even worse thanstock Intel). On a side note, AMD revised the silicon and package slightly for the 1090T 95W hex core part (NOT the 125W part) and gave it a higher case temp of 71°. If you could find one cheap then it would be a drop in replacement and you could either leave it at stock (3.3 GHz or something) or push it up much higher if you wanted. Food for thought.