The sound card is only one part of the equation. You'll need a high quality source (CD, 44.1 kHz/16-bit, or better quality) and proper decoding with excellent timing on the computer side; adequate amplification and drivers external to the computer.
Also, you will never be able to decode DTS-HD Master Audio or Dobly TrueHD (or the new formats like Dolby Atmos, DTS-X, and Auro-3D) in any computer sound chip, on-board or discrete. For that you will need to pass audio through an HDMI cable to a capable A/V receiver.