Tuesday, July 21, 2015

LG 43UF770 4K TV with gtx 960 running at 4K at 60Hz and chroma 4:4:4

This is complementary info to the one in here. I have LG 43UF770T and Gigabyte GTX 960 G1 Gaming 4GB. The PC is set to 4K@60Hz and connected to the tv using HDMI 1 port. Only this port supports HDMI ULTRA HD Deep Colour in this tv. By default HDMI 1 icon is HDMI and HDMI ULTRA HD Deep Colour is off as written above. This results in chroma 4:2:0. I changed the setting as per instructions here, i.e. HDMI 1 port icon to PC and HDMI ULTRA HD Deep Colour to On. The nvidia settings are shown below.

To test the chroma for the default setup and the new one I used chroma torture test.

The results are here:

As can be seen, the top red, middle blue and bottom text is unreadable with the default tv settings on HDMI 1 port. With the new settings, everything is clear.

1 comment:

  1. Anonymous6:00 AM

    Hi, it's fantastic to see you doing this. I've been looking everywhere for someone using the 43UF770 as a monitor and you are the *only* one that's talking about it.

    You've confirmed that it has 4:4:4/60Hz support, do you mind if I as a few questions?

    Can you dim the backlight LEDs to reduce brightness or do you have to control brightness in the video driver software? Modern TVs tend to be very bright and I like to work in a 'dark theme' workspace.

    Can you confirm that it's an RGB panel and not a 'fake 4K' RGBW panel?

    Does PC desktop text look just as clear as a regular PC monitor? I would want to use this as a CAD/software development monitor. I don't play computer games.

    Many thanks again for showing what you've found out so far.