Nowadays many motherboards have integrated audio and video. As a result, price of the board increases, but this compensated by fact that there is no need to buy discrete audio and video cards. The choice between integrated sound card and discrete version is rather complected. First, using a simple audio codec AC 97 (Audio Codec) standard significantly decreases the sound palette even in compared with old sound cards for ISA-bus. Furthermore, this embodiment consumes the part system resources, as the sound is processed by the processor. Therefore purchasing a motherboard with built-in two-channel (index 2.0) CODEC AC 97 is only justified in the budget set.
If you have a discrete sound, built-in audio codec must be necessarily disabled, because no matter from which device, you get the sound – with a sound card or a the built-in codec – the system resources will be eaten by both devices. To turn off the built-in audio codec in the BIOS Integrated Peripheral section, AC 97 Audio parameter must be set to Disabled. On the other hand, many manufacturers integrated into its motherboards very decent or even audio codec processors. Examples of such integration can serve Analog Device codecs, used in Intel processors or DSP (Digital Signal Processor) chipsets in nVidia. Thus a full five or six (index 4.1 and 5.1 respectively) channel sound card is built to motherboard, which can be better than most of the cards. Naturally, with such configuration there is no need to use a discrete expansion card. It is not even recommended to insert such card for avoiding the holding of such required system interruptions.