I have set up a computer that will operate over most of the day. A low power consumption as well as a cool and quite system is very important for me. So as I don't need the 3D power of my grafikscard I considered to undervolt the card. Underckloccking alone doesn't realy help to reach my goal. I have a Radeon X1300 pro with 600/400 MHz in standard. Any ideas?