View Single Post
Old 26-05-2014, 12:12   #30
qasdfdsaq
cf.mega poster
 
Join Date: Aug 2004
Posts: 11,207
qasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronze
qasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronzeqasdfdsaq is cast in bronze
Re: HDMI connections

No. The HDMI website clearly says standard and high speed cables are bandwidth certified to 75 and 340Mhz and nothing certified for any resolutions or frame rates.

The bandwidth to which standard speed cables are tested and certified is completely sufficient for 1080p if you actually read the specifications. All HDMI cables that pass any certification (standard or otherwise) have sufficient bandwidth for virtually all 1080p content.

Because, funny enough, the 720p "certification" is for 720p60 and the 1080i "certification" for 1080i60. Both of which have exactly the same bandwidth requirements as 1080p30. Which virtually all 1080p content currently available comes under. There is no "bandwidth necessary for 1080p and beyond", 1080p30 does not require more bandwidth than 1080i60 or 720p60.

It seems that you, too, have fallen for the marketing shenanigans rather than facts, read more deeply in to their page and you see:

Quote:
Q. What is the difference between a “Standard” HDMI cable and a “High-Speed” HDMI cable?

Recently, HDMI Licensing, LLC announced that cables would be tested as Standard or High-Speed cables.
  • Standard (or “category 1”) HDMI cables have been tested to perform at speeds of 75Mhz or up to 2.25Gbps, which is the equivalent of a 720p/1080i signal.
  • High Speed (or “category 2”) HDMI cables have been tested to perform at speeds of 340Mhz or up to 10.2Gbps, which is the highest bandwidth currently available over an HDMI cable and can successfully handle 1080p signals including those at increased color depths and/or increased refresh rates from the Source. High-Speed cables are also able to accommodate higher resolution displays, such as WQXGA cinema monitors (resolution of 2560 x 1600).
Now they say "the equivalent of a 720p/1080i signal" but deliberately neglect to mention that a 1080p30 signal is... exactly the same. The interesting part here is not what they say but what they don't say. Note very carefully that they don't say Standard cables can only handle 720p/1080i. Nor do they say the cables are certified for "720p/1080i". This omission is very telling.

Also note carefully that they never say a "high speed" cable is required or certified for 1080p but rather say it can handle 1080p "at increased color depths and/or increased refresh rates". Not that it is needed to handle a 1080p signal at all.

It is worded very carefully to give the impression that a high speed cable is required for 1080p by tactfully leaving out the fact that the vast majority of 1080p content has the exact same bandwidth requirements as the "equivalent to 720p/1080i" they are referring to, and fits perfectly fine in the standard cable certification requirements.
qasdfdsaq is offline   Reply With Quote