I'm wondering what the difference practically is between these 2 models, and if it's worth the extra money or not. I know the 2.8 has 512MB on the graphics card, as opposed to 256MB. I am not a gamer. Will this make any difference for me? The 320 GB HDD seems big enough. I want to keep this computer for a few years, and I do light video and photo editing, photoshop, indesign, etc. Anything else I should be taking into consideration? Thanks for your help.