I have an x800 pro and Ive been using atitool to overclock it and i have so far gotten its gpu from 475 to 500mhz and its ram speed from 450 to 485mhz what is considered to hot for a graphics card. and how should i overclock to. I can override the fan control but will that damage my graphics card it i put it at 100% all the time right now its on 40% at tempetures over 0 degress celcius.