Help Upgrade my pc

[Jogaser]

So currently i have this :
Motherboard Asus M5A78L-M/USB3
Font Corsair Builder CX430W

Processor AMD FX 8320 3.5Ghz BE SkAM3+

Graphics  Asus GTX650 Ti 2GB DirectCU II 

Ram Gskill Ripjaws X DDR3-1600MHz 2x4GB

Western Digital Blue 500GB SATA III 16MB

Drive DVD-RW Asus 24X Preta Bulk

Cooler CPU Arctic Cooling Freezer 13 CO

What should i upgrade... i know quite every thing but what are the priority's and consider it 500€ to upgrade now

[WkdPaul]

- moved to New Builds & Planning -