You intend to buy a HD 6670?
Your A10 6800K has an integrated graphics processor but it can only work together with something like a 6670. If you choose to get a much newer/better card like say, a R9 270/270X then the integrated graphics will not work although you will probably get better performance than with a 6670.
You're going to have to provide more information like what other components you already have (with details), your budget (in your currency) and where you intend to buy the new parts from. It will much easier for me to suggest the parts if you can link me to the website of a local store that you have access to.