KDE need more CPU usage ?

[Wong Kwok-hon]

Hello all...

I would like to ask that is KDE is need fast CPU? Because when I use
Mplayer to play movies in Gnome environment, the Mplayer didn't
displayed error. But when I change to KDE. The Mplayer displayed
"cannot open /dev/dsp or device busy" and I clicked the "OK" the movie
can play.

Do I need to upgrade the hardware or fix the KDE ?

Sorry for my english bad...

Wong Kwok Hon