Topic on Glossary talk:Graphics card

This page shows the changes between two versions of a post by Mirh in the topic "Cables, interfaces, and you" on Glossary talk:Graphics card. You can see other versions of this post at its history page.

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 We don't have an article about display interfaces, so here's a roundup of problems:
 * Despite [[Wikipedia:VGA connector|DE-15]] being technically compatible with SCART, component, composite and whatnot, passive adapters (but even a lot of "normal" active ones, which are just meant to go from a modern digital connection to PC VGA) won't work with most older TVs due to just-too-different [[Wikipedia:Component video sync|video sync signals]], [https://old.reddit.com/r/crtgaming/wiki/connectors-and-interfaces#wiki_interfaces scan rate] or color space.
-:* RGB-to-CRT hacks, [https://emulation.gametechwiki.com/index.php/Display_FAQ custom cabling], having a [[Wikipedia:Multisync monitor|multisync magic box]] or an old [[Wikipedia:Video-in video-out|VIVO]] card are all possible solutions. Or you could just buy a direct converter between the two desired standards.
+:* RGB-to-CRT hacks, [https://emulation.gametechwiki.com/index.php/Display_FAQ custom cabling], having a [[Wikipedia:Multisync monitor|multisync magic box]] or an old [[Wikipedia:Video-in video-out|VIVO]] card are all possible alternatives (if not the ''only'' ones [https://www.youtube.com/watch?v=puu-iyTsZtg&t=69s available], for the highest end use cases)
 * Not only may monitors support different "overt features" depending on the protocol ''and'' port they are currently hooked with, these factors can even [https://www.prad.de/testberichte/test-monitor-samsung-2494hm/7/ affect] [https://www.avsforum.com/threads/input-lag-wars-post-your-input-lag-results-of-your-lcd-display-here-for-reference.1131464/page-168#post-21438238 input lag]
 * The final capabilities and bandwidth of a video connection is determined by the greatest common divisor between the GPU display engine block, the physical link encoder, cables (and/or possible adapters), and display-receiver:
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 :* "Embedded" applications (i.e. about anywhere that isn't a desktop PC) have [https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1922754 less] stricter (and uniform) [https://linustechtips.com/topic/1306077-hdmi-21-on-3000-series-laptops/?do=findComment&comment=14485966 requirements] on the transmitter chip bridges <small>(this is most notable in the TV world with the most disparate subsets of HDMI 2.1 limitations)</small>
 :* Seriously, adapters are a [https://github.com/torvalds/linux/commit/6bffebc90c23e2341a1f8371e7b496ec94136e47 can] [https://www.phoronix.com/scan.php?page=news_item&px=mtq4mde of] [https://github.com/torvalds/linux/commit/fd952d436446cffdf97a61bf456a0987011e42e0 worms].
-:* Cables [[Wikipedia:DisplayPort#Cables|don't]] [[Wikipedia:HDMI#Cables|have]] "versions" (well, except HDMI w/ ethernet which is separate by design I guess). You only have a minimum guaranteed bandwidth certification, which the actual cord could also easily exceed in practice.
+:* Strictly speaking, cables [[Wikipedia:DisplayPort#Cables|don't]] [[Wikipedia:HDMI#Cables|have]] "versions" (well, except HDMI w/ ethernet which is separate by design I guess). You only have a minimum guaranteed bandwidth certification, which the actual cord could also easily exceed in practice.
 :* Of course there are [https://www.hdblog.it/2015/01/24/HDMI-20-differenze-tra-full-e-draft/ all] [https://www.dell.com/support/kbdoc/en-is/000126493/setting-up-the-p2415q-p2715q-monitors-with-hdmi-2-0-that-support-4k-x-2k-60hz similar] [https://old.reddit.com/r/bravia/comments/jdejop/why_the_xh90_x900h_cant_do_4k120hz_in_dolby/ kinds] of problems on the screen's end too.
-::* not last, since HDMI for some whimsical reason [https://www.avsforum.com/threads/2019-c9%E2%80%93e9-owners-thread-no-price-talk.3057634/page-432#post-58759564 cannot have] the YCbCr 4:2:2 bit depth measured (the thing actually always being [https://forum.kodi.tv/showthread.php?tid=332180&page=8#pid2760493 carried] on a 12-bit signal), some displays diagnostics menus can report "8 bit" as a placeholder value
+::* not last, since HDMI for some whimsical reason [https://www.avsforum.com/threads/2019-c9%E2%80%93e9-owners-thread-no-price-talk.3057634/page-432#post-58759564 cannot have] the YCbCr 4:2:2 bit depth measured (the thing actually always being [https://forum.kodi.tv/showthread.php?tid=332180&page=8#pid2760493 carried] on a fixed 12-bit signal<small>?</small>), some displays diagnostics menus can report "8 bit" as a placeholder value
 ::* tinkering around bandwidth limitation of the interface is even more of a [https://old.reddit.com/r/OLED_Gaming/comments/k40p42/oled_as_an_ultrawide_display_for_nvidia_users/ nightmare] when the usual [[Glossary:Scaling#GPU/Display scaling|caveats]] meet [[Glossary talk:High dynamic range (HDR)|HDR]]
 ::* many TVs may outright refuse any non-standard (as in: anything that isn't commonly found in a "home theatre" setting) resolution, even when [https://www.rtings.com/tv/tests/inputs/supported-resolutions forced]
 ::* this is at least still better than [[PC gaming on a TV and couch#Chroma Subsampling over HDMI and HDTVs|the past]], when they may have set the color space [https://forum.kodi.tv/showthread.php?tid=323825&page=2#pid2667303 based] on the resolution, or they didn't support non-subsampled 4:4:4 colours either (HDMI technically requires accepting a RGB color format, but that says nothing about processing and final presentation)
+::*all your base are belong to [[Wikipedia:Extended Display Identification Data|EDID]] (which can always be fixed with CRU, but a slightly [https://old.reddit.com/r/Monitors/comments/lfqjvz/open_letter_to_lg_regarding_27gl850_and_its_issues/ different] one could even prevent the GPU from ever going idle)