ATI tool on 9550

[kevinarjun]

hi my problem is whenever i overclock my 9550 to core 450 and memory speed to 248 BF2 and Counterstrike source plays well but when i start playing Unreal tournament 3 or F.E.A.R. or UT2k4 i get blank screen...pls help its very annoying...thnx...

MY card-Ati technology radeon 9550 gamer edition 256mb 128bit