OK, thanks guys. I guess it's a no go for 1.3GHz. It's still running on mine but then again I don't do much, other than make phone calls, text, watch some youtube and surf the web. I'll try to do a stress test under SetCpu for 15 minutes and see what happens. UPDATE: OK, did a stress test for 40 mins and no errors.
1.2GHz is plenty enough. I'll figure out how to undervolt it so that we can save a little battery life.