If you're not adverse to it, get an i7 processor. It's what I'm upgrading to.

(The CPU/Mobo combo I have off newegg)
http://www.newegg.com/Product/ComboD...t=Combo.155907
6Gb DDR3 RAM
http://www.newegg.com/Product/Produc...82E16820145222
Total cost: 743.98

Just saying it's an option if you're building a new computer.