March 20, 2008
it maybe usefull information for owner of radeonhd 3800/2600 card with overheating problem.
after digging a bit i managed to open 2600XT mapro’s bios image in Radeon Bios Editor
and here is screenshot about supported state (which is for powerplay)
so idea is to try to edit Mhz for 2d state. good luck
Do it on your own risk.