The APU integrated core graphics card can exchange fire with some specific models, the specific model depends on the APU model, but all APU core graphics cards can only exchange fire with HD 6450, 6570 and 6670. If the discrete graphics card you match can exchange fire with the APU core graphics card, then you can choose to exchange fire or not, or you can choose between the independent display and the integrated graphics card at will. For example, A6-3670K can match any of the three graphics cards I mentioned above.

2,

Motherboard integrated graphics card, plus discrete graphics card crossfire. At present, what we are familiar with is that AMD chipset integrated 4200, 4250 and 4290 graphics cards can support crossfire. Moreover, it can only exchange fire with relatively low-end AMD graphics cards, with very limited performance and generally no practical significance. For example, HD4200 can be matched with HD2400 series graphics cards. In this case, you are also free to choose whether to exchange fire, perform alone or perform together.

3,

What you said can't happen. At present, among the mainstream products, AMD and INTEL have integrated the graphics card into the CPU, completing the integration. At present, the APU series must match the motherboard of A55 or A75 chipset, and the new APU will match A85 in the future. None of these chipset motherboards have integrated graphics cards. INTEL series CPU is generally matched with chipset motherboards such as H6 1 H67 Z68 Z77. Like AMD, the motherboard has no integrated graphics card.