So I just found out about this CPU/APU the AMD A8 5600K which has intregated graphics and some guy told that when you run it in dual graphics with the HD 6670 it would be more powerfull than a Radeon HD6870 Is that true or was he just bullshitting?
yes, that is true.. See AMD Dual Graphics Technology. Basically, what it does is, if you have an Accelerated Processing Unit (APU) a CPU that has an integrated graphics included with the CPU, if you pair an APU with a certain HD 6**** series GPU the system would get a performance with respect to graphics. Check AMD's site to determine what GPU needed for your APU.