hd on pc propably before 2005? I don't really know. I just remember a 1280*1024 resolution.
1680x1050 on pc around 2007.
hd on tv (old used tv) in 2008, used it only for wii and hated it, looked worse than tube tv.
fullhd on pc and tv in 2011.
not really interested in 4k.
I don't remember ever having that "wow" effect in those screens.