What should i upgrade cpu or gpu?

[Toxic64]

I've been thinking about upgrading my pc but i wasnt sure as to what part i should upgrade, My current specs are
gigabyte ga-f2a88xm motherboard
Gigabyte gtx 650 ti 2gb gpu
Amd a10 5800k cpu
antec vp450 450w psu
im planning on either replacing my cpu or gpu which ever i need replacing most, if i replace my cpu id replace it with an fx 6300 and if i replace my gpu id replace it with a gtx 660, which part do you think would help me most?

 

[matt798]

the latest a10 kaveri apu has the newest amd cpu cores at use.

you have many options and should take your time choosing