basically I changed the 650 Ti for a Ti Boost: http://ca.pcpartpicker.com/user/kirilmatt/saved/22EN
It will be good, and be a lot cheaper then HTPC and PS4. That being said, if you plan on upgrading in the future there are some things I would spend more money on. This system would require lots of replacements to upgrade to FX steamroller or another GPU. Let me know if you have any other questions!