Okay, well then increase your RAM to 8GB (2x4GB) of either HyperX Beast, Ripjaws X, or Vengeance/Vengeance Pro. Then, get a decent cooler for your CPU, a Hyper 212 EVO cools great and is not all that expensive. Then do some light overclocking. You will see great performance gains, another thing you might want to do later on or right now if you have the money is add an SSD. A 120GB should be enough for your favorite games, OCZ Vertex 4 and Corsair Force GS 120GB versions are some of the fastest SSDs in the market. Your GPU is not really high end, more like mid end. So, when you have the money, look into something like a GTX 770 (400$) or GTX 760 (250$).