I have an HIS x1950 pro that I think is having overheating problems (weird artifacts after long use). I need to get some temperature readings to find out what is going on. Anyone have an opinion as to what is the best GPU temp monitor utility out there? ATI Tool? Riva Tuner? ATI Tray Tool? CCC? I'm just looking for something small and stable, that will give me temp reading and maybe adjust the fan speed. Thanks.