Alain123 :
There isn't anybody who tried this yet with that GPU.
But you can go with a Radeon HD 7670 and get good performance.
HD 7670 is provided for OEM use only.
A10 can work with HD 6970 but the IGP won't crossfire with the Graphic Card. (So u would waste a 7660D igp which performs nearly similar with HD 6670/GT 630) But since HD 6970 is in yard sale don't mind to have a try. Make sure the PSU is at least 500W and has a 8-pin and a 6-pin power conductor.
Don't use Dual Graphics unless your budget is tight, even pairing 7660D + HD 6670 GDDR5 is weaker than a HD 7770!