600 MHz
600 MHz describes the maximum TMDS character-rate class associated with full-bandwidth HDMI 2.0 signalling. It does not mean a 600 Hz television refresh rate.
600 MHz is how fast the HDMI signal ticks: 600 million steps every second.
It is the top speed of HDMI 2.0, not the refresh rate of your TV. A TV showing 60 pictures per second (60 Hz) can still need a 600 MHz link.
Only 4K signals with a lot of colour detail, such as 4K60 4:4:4, need this full speed.
Does the HDfury Vertex support 600 MHz (4K60 4:4:4) signals?
YESYes. 600 MHz is the Vertex maximum signal rate, the same limit as 18 Gbps. It passes 4K60 4:4:4 8-bit and 4K60 4:2:2 12-bit, and can convert them to 300 MHz formats for older displays.
How to use it with the Vertex:
- Use 600MHz-certified HDMI cables (p.5).
- Pick an EDID table with '600MHz' in its name, for example table 11 (p.15).
- Enable the TV's 4:4:4 option on a 600MHz-capable HDMI port, such as Samsung 'UHD Color' (p.103).
- For a 300MHz display, set SCALER > Auto Scaling; the 4K60 PRESET sends 4K60 4:2:0 8-bit 300MHz (p.30).
What it is
600 MHz describes the maximum TMDS character-rate class associated with full-bandwidth HDMI 2.0 signalling. It does not mean a 600 Hz television refresh rate.
Why it matters
HDMI behaviour is determined by the complete signal chain. Vertex exposes and manages these technical layers so mixed sources, displays, projectors and AV processors can be configured more deliberately instead of relying only on automatic handshakes.
Common questions
My TV says it supports 4K60 4:4:4, but it does not work. Why?
Most UHD TVs need an extra setting and a specific port for 600 MHz. The manual's Samsung example: turn on "UHD Color" for the HDMI port and set that port to PC (p.103). A 600MHz-certified cable is also needed (p.104).
What is the difference between 300 MHz and 600 MHz?
300 MHz is half the speed. It is enough for 4K30 or 4K60 4:2:0 8-bit, but not for 4K60 4:4:4 or 4K60 4:2:2 12-bit. Many Vertex EDID tables and presets say 300MHz or 600MHz in their name for this reason (p.15–16).