[idi banashapan]

if you are concerned with DTS HD Master Audio or Dolby TrueHD Audio, make sure you check the graphics card can pass it through the HDMI output. Newer cards are generally fine from Intel, AMD and nVidia, but cheaper or older cards cannot pass this audio, meaning you'll get the picture, but no sound.

I only say this as I get the feeling you might be building an HTPC for the inlaws on a budget. cutting too much off the cost of the card could scupper you if you do require the best experience for the end user.