The person who said "Integrated graphics cards cannot engage in crossfire with independent graphics cards" does not understand the crossfire technology at all. I advise him to go to Baidu before answering.
Crossfire is AMD's unique patented technology. That is to say, Intel and NVIDIA do not have this crossfire technology, and they cannot use it even if they want to, because AMD cannot authorize them to use it.
AMD’s crossfire technology can be a crossfire between two independent graphics cards (three or four can also be used), or a crossfire between an integrated graphics card and an independent graphics card.
The crossfire of your machine is the latter situation. It means that your integrated graphics card can crossfire with the independent graphics card, but there are two conditions: First, both the integrated graphics card and the independent graphics card must be It's from AMD. Secondly, only AMD's mid-range or mid-range and low-end independent graphics cards can compete with integrated graphics cards. Mid-range, high-end and high-end independent graphics cards cannot compete with integrated graphics cards. That's because of the performance of such independent graphics cards themselves. It is often very high, and there is no need for an integrated graphics card to assist performance.