I have a MSI Radeon 4830 OC 1GB that is factory overclocked from 575Mhz to 585Mhz but know this card can do some more. I have the latest version of ati catalyst installed but the overclocking is locked (you cant change any settings) anyone know how to unlock this as I cant find it on fourms anyware atm... (I am planning on pushing the clock up to 600Mhz to stay safe)