As iv heard u need to overclock ur N900 to 1Ghz for full speed , but gpsp can run full speed on the "Wiz" i got the wiz and i play them at fullspeed.

The wiz cpu is 2 generations below the cortex and slower , and its a ARM cpu just as n900 uses... , heres the wiz source if it can be of any use : http://dl.openhandhelds.org/cgi-bin/...0,0,0,0,46,102