I'm looking at taking one of my old PCs and swapping out the motherboard to one that has HDMI. The goal is to make a box that will have sufficient power to send 1080p & surround audio to our TV monitor by streaming from the Internet. I reckon that either Firefox or Chrome will be the browser that we'll use to watch streams.

Newegg.com lists over 60 motherboards with HDMI. If anyone can point me to a cheerfully cheap one that will do the work, I would be very grateful.