AMD is back, and it just made desktop gaming a whole lot cheaper

For years, the only option for serious gamers has been Intel. AMD's chips lagged far behind, to the point where the only question to be asked about desktop processors was i5 or i7.With its latest generation of chips, called Ryzen, AMD is changing all that. According to the numbers (although we don't have real-world tests just yet), Ryzen will offer performance that matches the highest-end Core i7 processors, but for half the price. Time to get excited.The top-end Ryzen 1800X costs $500, which is