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| PC 4K 43" monitors |
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| Someone:
--- Quote from: wraper on April 19, 2023, 05:40:23 pm --- --- Quote from: tom66 on April 19, 2023, 05:22:28 pm ---Gonna have to munch on my humble pie here, at least on my RX 580 it is 4:2:0. I swear I'd tested this before - perhaps it was 4:4:4 on my old GTX 1060 or I was fooling myself somehow. --- End quote --- It's physically impossible to do 4k@60 RGB or 4:4:4 through passive adapter regardless of what GPU you use. Nor it's supported by standard. --- End quote --- That is certainly true if the DisplayPort standards are followed explicitly, but I wouldn't be surprised if there is a manufacturer out there who had a dual mode HDMI/displayport output that could do higher bandwidth as a non-standard implementation (and likely a limited/reduced HDMI functionality). Most endpoints are fairly forgiving in what they will accept, spawning the tweakers/gamers doing custom timings to increase refresh rates. --- Quote from: tom66 on April 19, 2023, 02:28:39 pm ---Note that both DP and HDMI have four differential pairs in the cable, but HDMI dedicates one as a clock and data is on the remaining three, with TMDS signalling used to minimise EMC, whereas DP uses embedded clock with clock recovery at the receiver end (128b/132b in latest spec). --- End quote --- HDMI 2.1 enters the chat... But even before then some HDMI endpoints were doing clock recovery on the individual pairs anyway. |
| coromonadalix:
had a 43" 4k tv for a computer screen, yes the image was radical loll but you need a good clearance / distance, if not it will pop ypur eyes loll seen avatar in 4k on it, almost cried over it was too much after 2 days, reverted to a 2x 32" benq uhd monitors, thats enough loll totally hate the ultra wide 34" or more monitor, i want height too damnit, the 32" ratio was perfect, 43" a killer BUT |
| NiHaoMike:
Have been using 50" 4K for years, very nice if you have a GPU that can handle it well. For media playback including upscaling to 4K, I find that a Ryzen 2400G (~67% usage) is pretty much the minimum you would want to try with. |
| bw2341:
I've been using a 40-inch Vizio V405-G9 TV on an RX570 for a few years now. I had to play around with the TV settings to get 4K RGB 4:4:4 at 60Hz. Since it is BGR subpixel, I had to use Adjust ClearType text (ClearType Text Tuner) to fix it. Otherwise, the text had horrible colour fringing. I use 125% scaling and the text is sharp on most applications. I often use additional scaling in the browser for a more comfortable read as I get tired. I spend most of the time in the browser and I never see any scaling artifacts. The exceptions are some very old applications that have unevenly scaled text. Some new applications ignore the scaling and end up with text that is too small to read. The Visio has a VA panel. Black levels are good in the darker room lighting I normally use. However, the viewing angle limitations of the panel are apparent. At my normal viewing distance of 1 to 1.5 m, the side edges of the panel have less contrast and saturation than the middle. In fact, if I look with one eye at a time, each eye sees a different amount of contrast and saturation for the same edge of the panel. I almost ruined the TV by letting it update its firmware. After the update, it lost the ability to display with 1:1 pixel mapping, rendering it useless as a PC monitor. Everything looked blurry and it couldn't be fixed in the settings. Fortunately, others have experienced the same problem before me and a Reddit user saved and shared an older working firmware. It works in 4K60 at 4:4:4 full range RGB in 8-bit mode connected by the HDMI port on the GPU. If I want 10 or 12 bpc (bits-per-channel), I need to switch to 4:2:2 or 4:2:0. I can chose these modes in AMD Adrenalin. Edit: bpc, not bpp. fixed |
| tom66:
For my work laptop I have a USB-C hub which has 3 x DP outputs. In theory, it supports 3 simultaneous DP outputs (and I am using 2 x 4K60 with RGB in this configuration - I've *heard* it can do 3 outputs at 4K but not tested it), though Display Stream Compression is of course needed to achieve even one of those outputs. Still find it pretty incredible that this all goes over a miniscule Type C USB connector. |
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