The input rate is standardized but your first link is not a CNET link.
http://www.samsung.com/ca/consumer/tv-video/tv/led/UN55FH6030FXZC-spec and all pages there show no sign of input rate above the standard 60 but I do see high panel rates.
I tried contacting samsung support twice they only insist on my buying a new HDMI cable from the samsung store.
I have a high speed HDMI cable...
My AMD Radeon 7970 only detects the monitors maximum refresh as 75hz... I get tearing above 60hz this cnet page shows I can get 120hz via a standard HDMI. So why am I not getting 120hz when the tv says it supports 120hz.
Here is a screenshot of my catalyst showing the tv is not 120hz.