In about a month I will have about 900 dollars to spend from working to build my first gaming PC. I only need an OS to be included.(have monitor, etc) My screen res is 1600x900 and I play games like bf3, arma2, css, and far cry. I want to hopefully save as much money as possible and get pretty good performance at high to max on all games with 40+. I am not playing on 1080p and i don't know if it is worth is to get an overclock-able system. Should i save money for an ssd?