i overclocked my 6800gt using rivatuner to 400/1100. when i run a 3dmark2k03 i leave the hardware monitor in rivatuner open. i ran the benchmark and then checked the hardware monitor and my core speed dropped down to 350 shortly after starting the test and then once it was done it went back up to 400. does anyone know why it does this? is it dropping the core speed back down to defaults when i play games as well?