I have found that the serial bus in computers is much quieter than the PCI bus. That's why taking your digital audio out of your computer via USB (Universal Serial Bus) is quieter than via a sound card that is on the PCI(e) bus (Personal Computer Interface) bus (extended).
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer