I'm planning to build a computer for myself, on which I'll install Ubuntu 13.04 64-bit. This computer will be used for light gaming and office work. In order to save some money, I'm planning to use integrated graphics, but I don't know whether to choose the Intel HD Graphics 4000 (by using an Intel i5-3570K processor) or AMD Radeon 7660D graphics (by using an AMD A10-5800K processor).

According to your technical knowledge / experience, which of these two choices is the best, in terms of stability and performance? I want my system to be stable, but, at the same time, I would like to have some fancy Compiz or KWin desktop effects, and play some games.

I am more tempted to choose the AMD APU, because it's cheaper than Intel, and I have read from the Phoronix website, that this APU seems to work well, especially if using the proprietary Catalyst driver. But I still wanted to know your opinion. So, Intel or AMD integrated graphics?