As the Doom 3 launch approaches, the news about the highly anticipated title keeps coming in fast and thick. The latest interesting bit of information regarding iDs blockbuster has to do with a feature supported by the game but which has no hardware support for the time being. According to the information then, when Doom 3 is finally released, it will be able to utilize a card with 512MB of memory. The game, it is rumoured, will have ultra graphics performance settings which will use larger unc…