Since you want a quiet system for media, then I recommend the Noctua fans and heat sinks:
http://www.ncix.com/search/?q=noctua...ice=Max.+Price
And again, I highly recommend the Corsair HX520/620.
You can't just get any ol' video card or motherboard. You need to get ones that don't have fans or have very quiet fans. Many motherboard north/southbridges have very annoying fans on them.