hey i have tried using the overclocking ant it works no prob at 787 but i would always get the error on waking up from sleep.I made the reg edit change it from 0 to 1 am trying it now to see what happens.
EDIT - Still got the error on powering after sleep
edit 2 - just messing with it i had set it to 787 again and then used the power button to make it go to sleep and i got the SOD had to reset ...