HDMI Bandwidth – HDfury Vertex glossary
18 Gbps / 600 MHz maximum signal class.
Bandwidth is how much data an HDMI connection can move every second.
Think of it like the number of lanes on a motorway: more pixels, more frames per second or more colour detail need more lanes.
The Vertex has room for up to 18 Gbps; a signal that needs more will not pass.
How much HDMI bandwidth does the HDfury Vertex support?
YESUp to 18 Gbps (600 MHz TMDS). That covers 4K60 4:4:4 8-bit, 4K60 4:2:2 12-bit, 4K120 4:2:0 8-bit and 8K30 4:2:0 8-bit. A signal that needs more will not pass (p.110).
How to use it with the Vertex:
- Read the TMDS clock (for example 594MHz) of the incoming signal on the OLED Info page (p.19).
- Use a 600 MHz / 18 Gbps certified cable, ideally 6–12 ft (p.104).
- Enable the TV's full-bandwidth mode on a 600 MHz-capable HDMI port (p.103).
- For a 300 MHz display, pick a 300MHz EDID table or Auto Scaling (p.12, p.15–16).
What is it?
How much HDMI data Vertex can handle.
Why would you use it?
4K60 4:4:4 8-bit is a typical full-bandwidth example.
Inside the HDMI chain
18 Gbps / 600 MHz maximum signal class.
Do not confuse this with…
600 MHz is the TMDS character rate per channel (3 channels × 600 MHz × 10 bits = 18 Gbps), not the screen refresh rate.
Common questions
Why does 4K60 HDR 10-bit 4:4:4 not work through the Vertex?
4K60 4:4:4 at 10-bit needs more than 18 Gbps. Within the Vertex limit you get 4K60 4:4:4 8-bit or 4K60 4:2:2 12-bit instead (p.110).
Is 600 MHz the same as 18 Gbps?
They describe the same limit. 600 MHz is the TMDS clock; three data channels × 600 MHz × 10 bits gives 18 Gbps.
Do I need special cables for full bandwidth?
Yes. For 600 MHz / 18 Gbps the manual asks for 18 Gbps-certified high-speed cables, ideally 6–12 ft long; for 4K30 and 1080p almost any cable works (p.104).