Ok here is the thing..a month ago, i pulled out a Radeon 9700TX from a DELL PC (TX not XT..Dell used these TX, which are clocked at 263/263..basically a lower clocked card). I believe they are built by ati....But the problem is, everytime i try to overlock it either memory or gpu, even by 1mhz, the card stalls. I am thinking it might be locked. Is there any way i can change the BIOS or do something that'll allow me to OC it?