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AC'97's full name is AudioCODEC'97, which is an audio circuit system standard developed and jointly developed by Intel, Yamaha and other manufacturers. The AC97 sound card chip integrated on the main board can be mainly divided into soft sound card and hard sound chip. The so-called AC'97 soft sound card only integrates digital analog signal conversion chips (such as ALC201, ALC650, AD1885, etc.) on the motherboard, and the real sound card is integrated into the Northbridge, which will add a little work load to the CPU. The
The so-called AC'97 hard sound card,
A sound card chip (such as the innovative CT5880 and 6-channel CMI8738, etc.) is integrated on the motherboard. This sound chip provides independent sound processing and finally outputs an analog sound signal. This kind of hardware sound card chip is more expensive than the soft sound card, but the occupancy of the CPU is very small.