My HTPC currently uses an i5-3750, which is Ivy Bridge with HD2500 graphics, and Win 8.1 with Media Center. As I understand, this doesn't support 4K over HDMI. As I'm getting a new Samsung JS8500 TV ...

It's been awhile since I've shopped for one so I way out of the loop with regards to current cards. I'd like to keep it around $50 and I don't have have a lot of requirements other than it's fanless ...