The firefight is divided into firefight between discrete graphics cards and firefight between discrete graphics cards and integrated graphics cards (integrated graphics cards must also be AMD's integrated graphics cards).
Extended data:
In theory, AMD/KLOC-mid-to-high-end discrete graphics cards with a price above 0/000 yuan now support the crossfire technology of dual discrete graphics cards. However, the mixed crossfire between discrete graphics cards and integrated graphics cards can only be exchanged between APU and some low-end discrete graphics cards, while high-end discrete graphics cards do not support mixed crossfire.
However, not all low-end discrete graphics cards support mixed crossfire. As far as I know, HD 6570, HD 6670 and HD 7730 all support mixed crossfire, but it is not clear whether HD 7750 and HD 6770 support mixed crossfire. Starting from HD 7770, the above models do not support mixed crossfire.