I have an "nVidia 5200 128MB AGP" , but a friend of mine gave me an "Sapphire HD 3850 512MB AGP"
I noticed that wants a 450W PSU (or 30A on 12V with 2*4 power connector) . I would like to take a new tower
and use the old for movies (3850 can playback Blu-ray) . If card wants more power than the PSU , may I underclock the graphic controller or lower the voltage?