General > General Technical Chat
PC 4K 43" monitors
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wraper:

--- Quote from: tom66 on April 19, 2023, 02:28:39 pm ---I must have missed this memo because my monitors are running at 4K@60Hz without any chroma subsampling using a passive cable.  OK, maybe there is a small IC in them, but they are still not featuring much electronics in them to convert a signal so are something you can get pretty cheap if you need them.

--- End quote ---
So it shows RGB color format in GPU control panel? If so, then it's not a "passive" cable.
tom66:

--- Quote from: wraper on April 19, 2023, 03:44:42 pm ---So it shows RGB color format in GPU control panel? If so, then it's not a "passive" cable.

--- End quote ---

I'll have to check if it shows RGB, but I can see it's not chroma subsampled, because I've put checkerboard patterns up on the display and it can address adjacent pixels without any chroma blur.

Here's the cable: https://www.amazon.co.uk/dp/B081GGNWCX  Claims only 4K@30Hz, but definitely manages 60Hz, and clearly states it is a passive cable.  I'm not intimately familiar with how it does it, though.  Maybe the Samsung monitor is just treating the HDMI input as a DisplayPort?  Worked on my Nvidia 1060 card and now the AMD RX 580 I have in my PC though.
coppice:

--- Quote from: tom66 on April 19, 2023, 03:57:24 pm ---
--- Quote from: wraper on April 19, 2023, 03:44:42 pm ---So it shows RGB color format in GPU control panel? If so, then it's not a "passive" cable.

--- End quote ---

I'll have to check if it shows RGB, but I can see it's not chroma subsampled, because I've put checkerboard patterns up on the display and it can address adjacent pixels without any chroma blur.

Here's the cable: https://www.amazon.co.uk/dp/B081GGNWCX  Claims only 4K@30Hz, but definitely manages 60Hz, and clearly states it is a passive cable.  I'm not intimately familiar with how it does it, though.  Maybe the Samsung monitor is just treating the HDMI input as a DisplayPort?  Worked on my Nvidia 1060 card and now the AMD RX 580 I have in my PC though.

--- End quote ---
Its really annoying that most TVs and monitors won't display the kind of input they are working with. Many even make it hard to find the resolution and frame rate, but further information, like 4:4:4, are rarely available at all.

The place sub-sampling shows up most clearly is with small coloured text. Is red text on a dark background really a nice clean red, even when viewed really closely?
paulca:
I still want MORE monitor space!
JohanH:

--- Quote from: coppice on April 19, 2023, 03:14:04 pm ---
--- Quote from: JohanH on April 19, 2023, 02:31:53 pm ---In my opinion a monitor cannot be "too big".

--- End quote ---
I'm not sure about that. I watched people bug fixing the internal code of a 75" smart TV, using one of the TVs as their development terminal, in a cramped corner of the factory, sitting right in front it. That screen definitely looked too big. :)

--- End quote ---

I'm definitely sure. That's a very specific use case. With a normal OS, the window manager will allow you to resize the terminal window and font to whatever size you want.
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