This one lets you change registry things like Pending Frames (ones to be loaded). Also, make sure you have proper cooling and you clock up from the stock speed at 3Mhz at a time! You will hill it id you try to go to far. ex: Ifyou have a Voodoo 3 1000 AGP (OEM model) running at 149 Mhz steady without cooling so there is some head room.
