So in terms of just looking at the computer side of things, forget the interface, the mics, the preamps, the sound quality of the room you're recording in and the sound treatment of that room. Just in terms of the computer (PC in my case), what role does it play in the actual sound quality of the audio you're working with? Both in the recording of that sound and then later in the processing, mixing and mastering? I know that faster processing time and a more powerful computer can help you record more tracks and use a lot of processing and effects without suffering through constant drop outs, etc etc. But just in terms of sound quality alone, what role does the computer play in that? And which part of the computer? If there was an upgrade that could be made to a PC just to improve sound quality, what would it be?