New to this

[darkbluefirefly]

HI i just recently bought a Sapphire Atlantis RADEON 9600 256MB, and a Sapphire Atlantis RADEON 9600 256MB Pro. I was just wondering how to overclock the non pro, and the pro already comes with trixx, so that's easy to do. But do i need a new fan or anything to over clock the non pro card? And is there anything i can unlock or what not? Also why does it sometimes have a Sapphire Atlantis RADEON 9600 256MB "XT" (M this at the end when searching on google). Please help lol, i just want to try this overclocking.