I will say that the first article from Trusted Reviews kind of kills me when it talks about Blu-ray Disc maxing out at 54Mbs. The data on a disc maxes out, completely compressed, at that data rate, but that has nothing to do with the uncompressed video. So, it's just not useful information. HDMI video should really only be looked at after it is fully decompressed, not before.
Anyway, then it goes into some good stuff about the HDMI 2.0 specification, which has nothing really to do with cabling.
Then there's an article about cabling, which is good, but brief, and really doesn't touch on some important issues.
The two concepts are hard for some to separate. HDMI 2.0 is a specification. It includes many options and offerings which include 18GBs data across the cable, higher resolution, more audio, better color, better control, etc.
But, the only cable specification is 18GBs speed. That's supposed to have been covered by the HDMI 1.4 specification, and high speed cables. So, if you have a high speed cable, it is supposed to support 18GBs, which means it meets the requirements for HDMI 2.0. The rub is that the cable is high speed, it's not actually 'HDMI 2.0'. I'm not sure why they don't market it as HDMI 2.0 certified cables, but they don't, or at least aren't supposed to.
18GBs cables are not as easy to find as some people make them out to be. Something which truly supports 18GBs are often distance limited, despite some claims to the contrary.
But, spending a fortune on a cable doesn't make sense ever. That doesn't mean that it doesn't still make good sense to buy from a quality manufacturer. Blue Jeans is great. Companies like Extron (commercial) are a bit pricey, but truly certify their cables and the speed of the cables.
