Hey, I'm thinking about buying a used Black macbook from January with 2.0ghz dual 2 core, 120gb hard drive, 1GB of ram (I'm going to upgrade to 2) for $850 (which is somewhat of a steal) But, I can ONLY go up to 2gigs of ram. not 4. but most importantly, there is the GMA 950 graphics card, is the X3100 really so great? Great enough for me to spend almost double for it? 1,500. please respond! thanks!