That time of the year, new computer thread go!

I'd like opinions on a gaming build, so I'll just add on to this thread if that's OK.

Here's the build, I have a bit more in the budget to improve the CPU if anyone has any suggestions. The core of this build comes from mysuperpc so I am assuming there are no conflicts.

I upgraded the vid card and would not have a problem upgrading the CPU but I don't want to start causing problems with things not working well together. I'm grabbing 8g of RAM and plan on running Win7 Home Premium; would more RAM be a wise or wasteful addition?

Also, I'm not an audiophile, but would it be a good idea to grab a sound card?

It's all Amazon except for direct buy on the RAM:

Case: http://www.amazon.com/gp/product/B004WK3KKQ/ref=ox_sc_sfl_title_4?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

PS: http://www.amazon.com/gp/product/B0064LWI40/ref=ox_sc_sfl_title_5?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

MoBo: http://www.amazon.com/gp/product/B007R21JK4/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

CPU: http://www.amazon.com/gp/product/B007SZ0E1K/ref=ox_sc_sfl_title_6?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

RAM: http://www.crucial.com/store/partspecs.aspx?imodule=blt2kit4g3d1608dt1tx0&pid=862686

Vid Card: http://www.amazon.com/gp/product/B008PQAE98/ref=ox_sc_sfl_title_3?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

SSD: http://www.amazon.com/gp/product/B004W2JL2A/ref=ox_sc_sfl_title_7?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

HD: http://www.amazon.com/gp/product/B003SANWI6/ref=ox_sc_sfl_title_8?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

BlueRay: http://www.amazon.com/gp/product/B004ZMG55I/ref=ox_sc_sfl_title_2?ie=UTF8&psc=1&smid=A34FFV8YYDM571