First, I have heard that as regards playing games, the 512 MB graphics card does not really help over the 256 due to BUS speed or something? If that is the case, in what way does having a 512 MB graphics card help? Second, how much of a difference does going from 3MB L2 cache on the baseline Macbook Pro to the 6 MB L2 cache on the 2.5 Ghz Macbook Pro? In what ways does more cache help? I am deciding between the 2.4 GHz Macbook Pro, and the 2.5 GHz Macbook Pros (15" only). I am a computer engineering student. My college has specified that I need at least a 128 MB video card minimum. On my own time, I will probably play some games, store a lot of media, record music for myself/my band, maybe a little photo or movie work. I am able to afford either model. Thanks for any suggestions!