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Journeyman III
Journeyman III

TCL 43S405 TV & R9270x Locked at 3840x2160 30HZ

So, as the description implies, I purchased the TCL 43S405 TV, and the current card in the machine is an older Sapphire Radeon R9 270X 4GB. From everything I have read the card should support 3840x2160 at 60hz, and the TV should as well, yet it's locked at 30hz. Links for both products provided below.

Video Card.....

https://www.amazon.com/gp/product/B00FLMKN6I/ref=oh_aui...

TV/Monitor.....

https://www.amazon.com/gp/product/B01N29XPO3/ref=oh_aui...

Radeon Crimson Driver Version.....

17.9.3

I'm using the display port output on the 270x into the HDMI 1 port on the TV. The input for the TV is set to HDMI 2.0 and I do get signal, but if I open the windows display adapter properties it only shows 30hz selections for that resolution. Also, on the monitor tab it labels the device as a Generic PnP Monitor and 30hz is the highest selection. So the only option I have currently is to run at 3840x2160 at 30hz. Granted it looks fine, but I was under the impression 60hz would be doable. Any help on getting 60hz, or even confirmation that it won't work and why would be greatly appreciated. Thanks in advance.

Message was edited by: Matt B

We have updated the title of this discussion with relevant details to better describe your issue.

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5 Replies
Big Boss
Big Boss

Re: Question about an older R9270x and 4k 60hz

If you use DP to run the panel, older cards can support 4K60 panels fine

HDMI is not able to handle 4K60

HDMI 2.1 is needed for 4K60 panels

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Journeyman III
Journeyman III

Re: Question about an older R9270x and 4k 60hz

As was stated in the original post, I am using the display port output of the card to hdmi on the TCL. The TCL hdmi port is set to hdmi 2, as per the instructions for the TV.

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Big Boss
Big Boss

Re: Question about an older R9270x and 4k 60hz

If you are using a 4K TV you will need to get an updated video card with HDMI 2.0a or HDMI 2.1

The DP to HDMI are not going to solve your problem

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Journeyman III
Journeyman III

Re: Question about an older R9270x and 4k 60hz

Interesting.... All the reading I am doing elsewhere is saying the Displayport is perfectly capable of doing 4k 60hz on that card.

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Big Boss
Big Boss

Re: Question about an older R9270x and 4k 60hz

DP 1.2 is, but your cable converter is another problem

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