Originally Posted by coolgeek
The point is, if it can only do say, 10.5gbps, then you'll have to sacrifice something when you need the bandwith... you can't do for example 4K/60p/10 or 12 bits... the full spec for HDMI 2.0 would need to be 18gbps to have all of it's features... of course, next up would be 8K or HDMI 2.1 at 48gbps.
Plus, I don't even trust their specs. Onkyo is really bad with their HDMI boards for years already now...
It's clear that you don't like Onkyo, but my comments revolve around the need or requirement to support the current video content out there, and the display devices most of us have... The Onkyo RZ covers most of that and AFAIK
Will older AVR's do HDMI 2.1 or 8K at 48 Gbps, of course not
, does it need to right now, no
, as soon as an AVR is designed and made it becomes obsolete, but the specs for the latest video formats are way ahead of what is being delivered to us now so to expect an AVR to have all of todays bases covered when it went on sale 3 years ago doesn't make sense.
Given the UHD format as it was released, there are those that seem to be worried about the maximum specs possible with respect to HDMI when we are really not even close to using it even now... below is the spec for most UHD BR's as released, they are not pushing the HDMI specification we have now let alone the latest HDMI specs that have been announced!
The Ultra HD Blu Ray spec is as follows:
Up to 4K resolution
Up to 10 bit color
Up to 60 frames per second
Support for wide color gamuts (REC.2020)
Support for HDR10 and Dolby Vision
No 3D support
Things there are confusion over with respect to UHD displays:
18Gbps. This may be required if content makers start releasing movies with high frame rates. 4K @ 60 frames per second may require
18Gbps data rates if it is at bit depths of 10 or 12 bits. Otherwise 10.2Gbps is fine, even for 4K60 at 8 bit!
12 bit color. This refers to the color bit-depth. Old Blu-Ray is 8 bit, new UHD Blu Ray can support 10 bit. It’s not clear what bit depth is being used by the streaming services, but it’s probably 8 bit.
4:4:4. This refers to color sub-sampling. Whilst 4:4:4 is used in content mastering, UHD is distributed via 4:2:0.
3D. There is no UHD 3D at this time, at least via Blu Ray
IMHO there is a lot of HYPE about 'needing' your equipment to support the latest specs, 'a cure without a cause!'
As always though, to each their own...