Originally Posted by CaptNKILL
It downclocks when in 2D mode. This saves a lot of power and creates less heat. I think every card since the 6 series has done this. Maybe even the FX series.
Run a game or run a benchmark in a window (like furmark) and you'll see the clocks go up instantly... as well as the temperatures.
Every card? My 9800GTX doesn't. Is it supposed to?