Cromewell said:Depends on the card but as a general rule they will use the reference design (or change the HSF), so they will be very similar.
these are ATi brands, the brands listed by Gimulus suggest he is looking at nVidia cards.sapfire, and maye even powercolor.
Cromewell said:XFX sometimes pre-overclocks a version their card. Sometimes they will put on higher rated RAM so you can overclock more.