[SOLVED] What is the max HDMI 4K framerate on a Red Devil RX580 8g?

[ChangeinPortland]

Just got a 4K 120Hz TV, my card will push 120hz at 1080p & 1440p, but only 60hz @4K. TV only has HDMI inputs, and I am just trying to figure out if the 60Hz limitation is due to the cable I'm using, it's new and supposedly HDMI 2.1/8K ready, or if it's a refresh limitation on the HDMI output from my card at 4K 60hz and it just won't push a higher 4K refresh rate?

 

[madmatt30]

Rx 580 has hdmi 2.0b which only has enough bandwidth for upto 4k 60htz.

Hdmi 2. 1 is required for 4k 120htz.

Only the newest rx 6***series have hdmi 2.1

 

[ChangeinPortland]

Ahh, thanks, man, I thought this may be the case, but not having had any 4k capable panels I hadn't really looked into it until this time, and the spec page wasn't exactly clear.

Cheers.

 

[geofelt]

Not only do you need hdmi 2.1 output from your graphics card, but you also need an Ultra high speed hdmi cable.
nvidia 3000 series work.

 

[madmatt30]

Even my 5700xt has the same limitation and its nearly twice as powerful as a 580.

Weirdly some nvidia rtx 2*** cards can be forced to output 4k 120htz via hdmi 2.0b if chroma is set to 4.4.2 but really still not great as that gives desktop text a 'hazy' look.

In reality 4k 120htz displays have only just become a thing in the last 12 months and the 580 is nearly 5 years old now - it's kind of to be expected.