I would upgrade your CPU to higher FX series like 8350 (this would take you to the top of the performance chart)
http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106-5.html
AMD FX-8350 Black Edition Vishera 8-Core 4.0GHz (4.2GHz Turbo) Socket AM3+ $189
http://www.newegg.com/Product/Product.aspx?Item=N82E16819113284
The upgrade would be best with new motherboard from your $49 board. Something like this"
ASUS M5A99X EVO R2.0 AM3+ AMD 990X + SB950 SATA 6Gb/s $134
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131874
Upgrade your GPU to the 670 series, (see chart, that takes you up 2 spots)
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html
EVGA 02G-P4-2763-KR GeForce GTX 760 2GB $244
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130933
You did not list the brand of your power supply, but make sure if you do upgrade it is of good quality and not some low level brand that will fail. Buy something of quality like seasonic, corsair or thermaltake, like this:
Thermaltake Toughpower TPD-0650M - SLI/ CrossFire Ready 80 PLUS Gold Certification $99
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153199
I dont know your budget but these are examples to significantly increase your performance. Also, I dont know your existing case. You have to make sure the parts will fit inside the case. Good luck.