I'm looking at a budget upgrade for an old system for a bit of light/retro gaming and an AMD APU seems quite well suited. Basically I'm wondering if it is worth the extra money for the A6 6400K over the 5400K? I notice the 6400K seems to come with SimCity free? Is it easy enough to sell this on in the market place? If so I suppose that could more or less cover the difference in price. Also, I was wondering about RAM. I read that AMD APUs perform better with faster RAM, but for a budget system do you think it is worth spending an extra £10 (£45) on a 2000mhz kit over cheaper 1600mhz stuff?