I would go with an intel core i5, mainly because it has amazing performance, especially you'll notice that while gaming, you'll get amazing FPS, as long as you're not using a bottleneck GPU. It is also more upgradeable, which means you'll probably want to go with an LGA 1155 socket motherboard, and intel has stuck to giving compatibility for LGA 1155 for a LONG while. And the FX is not as good, maybe it is good for rendering, but it will be poor compared to the i5 while gaming. So if you can throw in the extra bucks, I'd definitely go with the i5-3570k. the K at the end means it is easily overclock-able, and for that you will probably want to go with a Z77 chipset motherboard because they only let you overclock. There's another chipset, which is cheaper, called the P68 or P67, also lets you overclock, but Intel decided to be sneaky and made the chipset not compatible with integrated graphics, like the intel processors have Intel HD **** graphics, with the asterisks replaced with the version of the graphics. If you're planning on getting a graphics card along with your PC, I would go with a P68/P67 motherboard. Hope this helps