- Sep 13, 2019
What does double penetration got to do with HDMI ?This is highly unlikely because Sony is using a DP 1.4 => HDMI Converter chip.
As we all know DP 1.4 is limited to 32 Gbps. This would also explain why Sony never mentioned ALLM (=> there is no ALLM for DP).
They did not lie. 4K/HDR/120 is already possible. VRR does not incrase the bandwidth.
In other words: 32 Gbps is totally fine. Of course 422 chroma subsampling must be used in order to fit the signal into 32 Gbps, but Sony never claimed support for 4K@HDR@120@10Bit@RGB. Even 8K will work just fine with 32 Gbps with the help of DSC (Sony did not say that the 8K works uncompressed). In fact: Even 24 Gbps is enough for an 8K signal that is compressed with DSC.
You have to thank the HDMI Forum for the lack of transparency regarding the HDMI specifications/advertisements etc.