What happens when you take a Radeon HD 3870 graphics card and slap a gig of memory on it? That is the question of the hour, since our subject is Diamond's new card with just such a configuration. The Radeon HD 3870 has established itself as a pretty decent option among mid-range graphics cards, although it's squeezed by formidable competition from Nvidia. Could doubling up on video memory allow the 3870 to distinguish itself from the likes of the GeForce 9600 GT and GeForce 8800 GT? We decided to find out.