Underclocking X700 Problem

Ok using notbook hardware control ive been underclocking my x700 to keep tempertures down when not playing games. Then would return the clockspeed to normal when playing games. But i also found my system has been freezing latley. And it seemed it was after doing this. Happened first when using the DVD drive, then i noticed after returning the clock speed this problem stopped. Underclocked again while not using DVD drive and then i found a couple websites that are highly graphic oriented starting feezing my system. Continued ever time i wne to the pages. I then returned my x700 clock speeds to default and the problem ceased. I was underclocking the x700 fromdefault of 350/300 to 170/130. I dont understand how underclocking the video card could cause a problem like this. Any ideas?

 

If you clock it too low it will start acting buggy...it happened to mine when I tried to clock that low. Try increasing them to about 200/150 and see if that helps.

 

ok ill try that. Thanks.