Stefanos is correct. An R9 290 is already pushing an FX CPU as far as it can go. Unless you're upgrading your CPU/motherboard/RAM in the very near future (meaning two months rather than two years), it doesn't make sense to buy a better GPU. Because, in two years, the money that would be spent on a GPU that you don't get a real benefit from for two years could buy an even better GPU in two years.