The RedMere Technology allows these cables to support the full 18Gbps to longer distances while using thinner conductors than ordinary cables. A typical passive High Speed HDMI Cable can reach a maximum length of 25 feet using 22AWG conductors which results in a cable as thick as your index finger. On the other hand High Speed HDMI Cables with RedMere Technology can deliver the full 18Gbps bandwidth to up to 60 feet using 28AWG conductors which results in a cable about half the diameter.
While existing High Speed HDMI Cables can handle each individual feature in the new spec real-world video usage usually employs more than one HDMI feature at the same time. For example your resolution at 1080p is one feature 36-bit Deep Color is another and DTS-HD Master Audio™ is another all of which have significant bandwidth requirements. The difference between the older 10.2Gbps cables and these newer 18Gbps cables is the need to compromise in your choices versus no need for compromise.
Additionally these cables support all the following features from previous HDMI specifications:
- 1920x1080p HDTV resolution @ 60 Hz refresh rate
- 4096x2160p (4K) resolution @ 30 Hz refresh rate
- 3D video
- Deep Color up to 16-bits per channel (48-bit total)
- Audio Return Channel
- HDMI Ethernet Channel
- High definition multichannel audio including DTS-HD Master Audio and Dolby TrueHD™