I need to get myself a new graphic but i cant deside on which 1 it needs to be under 250$ i was think of get a 6600 gt 256mb but i was wondering if it would be better to get a 6600 gt 128mb sli ready then when i get more money in the future to buy another one or i was think of getting and ati x800 but i heard 6600 gt were better and 1 more question if i get a 6600 gt 256mb what the difference if i got a 128 mb?