I use my 460 to fold and i set the voltage to 0.912V from stock 0.975V and clocks to 700/1500 from 775/1850. Using the lower voltage i am concerned if my card can cause computional error while folding. Is there any indication if an error has occurred? I have been folding for few days and never my system crashed while folding, I have tried games at above settings and didnt crashed either. btw my gpu is emitting high pitch beep only while folding . The sound can be heard clearly when i put my ear near the gpu. This doesnt seem to be related with the voltage though, even at stock setting the beep is still there.