The a8-5500 has a 7560d for the graphics component, you likely do not have 2133 mhz ram to really power the APU as the APU uses system memory (regular ram) to handle the required memory to simply display the image on your screen.
How a dedicated gpu works is it has its own processor for graphics applications with, normally in anything decent, gddr5 ram built into the card easily running at 5ghz stock (compared to 2.133 ghz from before.)
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102958&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=this is the cheapest, best, solution to greatly improve performance. You can run hybrid crossfire with an apu and a select gpu, and a 6670 is the best you can match with a 7560d.
/helpfulness wears off.
You are a fucking dumb twat with computers, "i guess my graphics card is not elite" you don't even have one, talking bout walmart pcs expecting amazing shit.