SUM 660$. Personally I would go with the 7850, since some games are GPU intensive even in 720p, the price difference for perfomance gain isn't that much and It will be better when you upgrade your monitor
There are alot of good choices but get the Phenom II X4 965 BE right now it is on sell for $84.99 on Amazon with free shipping. You should spend the most on your graphics card so get the most that you can afford you can always get a less expensive case, power supply, memory. found a power supply for $29.99 that is a Thermaltake TR2 600W ATX12V Power Supply from micro center and a 500gb caviar blue 7200rpm for $39.99 also at micro center. You can find good cheep cases for $30 from good brands like coolermaster and the NZXT is a good choice. You will want to try and get the 7850 card it is the best bang for the buck you are going to get in your price range. just keep checking for deals on NE, TD and the other sites along with Amazon, there you will get alot of free shipping which will help keep the price down.
I am building a $600 budget http://pcpartpicker.com/p/F8ED
I'm sorry michxymi, but I don't want to spend $660 on a computer right now. I'm trying to spend as little as possible at the moment. I think I might have to put it off for 2 more months before I can get my computer.
Rojodog, I love the both computers. I already ordered my windows 7 from Newegg, because it was $80, but like I said I might have to hold off on purchasing my computer for a bit longer. I'm going to save both lists, so that I can decide which one to buy thanks!