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