I am planning to buy a new MBP, I do a lot graphic works such as illustration and photoshop & web development such as flash and dreamweaver. I love to play FM2011. So I am planning to buy 15" anti-glare with upgrade resolution. I think I will updrade the RAM to 8GD later. But I want to know how is the big difference of 2.2GHz and 2.3 GHz ? How is the difference of the on-chip cache size increases from 6MB to 8MB. Do I need to updrade it to 2.3Ghz ?