This is hardly a great surprise. PC editions of FIFA have used older versions of the engine than their Xbox and PlayStation counterparts for some years, and this just continues the trend. FIFA has mass appeal so EA probably doesn't want it to require a bleeding-edge PC, but it's a shame it couldn't add enough config options to keep the game crawling along on slower systems.
FIFA 14 comes to PC, Xbox 360 and PS3 on September 24, with Xbone and PS4 versions following when those systems launch. Pre-ordering gets you 24 'gold packs' for the trading card-y Ultimate Team mode, delivered one per week for 24 weeks, each with a randomised selection of 12 players, kits, staff, stadiums, contracts and whatnot, and one guaranteed rare.