Are all Radeon HD cards comatible with Dual Graphics?

[dturner0528]

I am looking to purchase the new A10-5800k AMD APU. It comes with an integrated AMD Radeon HD 7660D GPU. It can dual up with a discreet GPU, but it only has 2 different models listed, the HD 6570 and HD 6670. I currently own an ATI Radeon HD 5770 discreet card. Will the A10-5800k dual up with my 5770, or only the two models listed?

 

[jossrik]

I'm pretty sure only the two listed. AMD cards offer the most freedom as far as dual cards go, but usually you gotta keep them similar. It's probably better for you to run the 5770 without the crossfire than the crossfired apu/gpu, not sure on that one, wait for some one with more knowledge to chime in.