So... I went out to a food eating competition, when I got home, my prime95 had crashed after 2.5 hours.

Bumped the voltage to 1.28v and prime95 ran overnight while I slept with no issue. I'm wondering how much higher I can push it, I don't want to get too crazy with the volts. I'd like to stop at 1.4v - but will I acheive any significantly higher clocks?

Only time will tell...