900 Dollar Gaming PC

Hey guys I don't know too much about PC hardware and I was wondering if any of you can suggest a build around 900 dollars that will mainy be used for gaming (I live in the US).

I'll have one for you in sec

How is this build?



All the parts come from Newegg. I'm not sure what resolution you'll be playing at though.

Here..Its 50 bucks more http://pcpartpicker.com/p/19Fin

Do you guys think it is worth it to spend the extra money for the better cpu?  And also is 550w a good enough psu?

I put this together, should be a kickass system for under $900