At the moment I have the APPLE MacBook Pro MB985B/A 15.4" 320GB/4GB RAM/1.66Ghz
computer and I am thinking to buy Apple MacBook Pro MC721LL/A 500GB 15.4" i7 MC721
. The price difference is only GBP 300. (I got a buyer for my old mac already)
Is it worth it? The main reason to upgrade the computer is general speed issues. (specifically, while browsing with FireFox, slow rendering time using Photoshop; from time to time I like to turn on some games)