I have got a GTX 970 recently so I think it is a good time for me to upgrade my current TV to a 4k TV. However, I have see forums mentioning current 4K (40 to 50 inch) TV usually only support 4.2.0 but GTX 970 can support 4.4.4 . So If i get a TV which is 4.2.0, it will be a waste of my GTX 970. As I am quite unfamiliar with electronic stuff, can someone be kind enough to explain to me what is the 4.4.4 and 4.2.0 about and what will be the actual difference? I cannot find anything from TV official websites that mention 4.4.4 or 4.2.0 in the specifications. Thank you in advance.