Originally Posted by Transistorious
Are certified HDMI cables a must like Premium gasoline is for my Corvette? I am just asking.
Required no, but some of the cheap cables don't cut the grade for full 18Gbps speed so a certified premium cable *should* work at full speed w/o issue.
This doesn't mean there wont be defects etc.
If someone spends the money to certify the product you can have more confidence it works.
With the 48Gbps speeds needed for hdmi 2.1 it will be more important not to use a cheap cable.
I don't mean spend 100$ on a 10' cable but use something that is certified and from a known good cable vendor.
For longer than 10' runs, 2.1 cables will most likely be active cables with optical interfaces to HDMI and be more costly than their 2.0 count parts of the same length.
My 50' Ruipro 2.0 cable is an active cable like this and works flawlessly.
From one car guy to another much like your corvette, if you want it to run properly as intended by the manufacturer use the premium fuel (cable) to ensure your getting all you should be from your vehicle (display device), but no need to run $15/gallon 95 octane race fuel ($100 10' hdmi cable).
The difference here is you lose a few HP from running regular fuel, but if the cable doesn't support the desired speed various problems can manifest itself that are worse/or more irritating than losing a few HP.