Heres the problem. I just reinstalled windows xp media center and i have a 8800GTS. I had Xp pro on it before and it was fine at 630/1000 and would show on riva tuner's hardware monitor at 630 core. But since i installed media center is acting funny. if i put it at 630 it shows up on the hardware monitoring at 621 but if i put it alittle higher it goes up to 648. Ati tools shows 630 and ntune shows 630 why is riva tuner showing something differnt?