So I'm building a pc and have have chosen http://www.asus.com/us/Motherboards/M5A97_LE_R20/ as my mobo and for cpu http://m.newegg.com/Product/index?itemnumber=N82E16819113286 how good are these two I'm leaning towards an evga gtx 750 or gt 640 how much gaming could I do with this setup and also 4gb gskill ripjaw ram this is my first build also I'm just planning on playing some world of warcaft and maybe some left for dead