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.
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:*VGA has the RAMDAC frequency to set bounds, while DVI and HDMI terms are set by the TMDS clock. These can often lead to lower supported resolutions than the official maximum of the protocols, especially on laptops (I have yet to hear about similar unexpected shortcomings in DP though) | :*VGA has the RAMDAC frequency to set bounds, while DVI and HDMI terms are set by the TMDS clock. These can often lead to lower supported resolutions than the official maximum of the protocols, especially on laptops (I have yet to hear about similar unexpected shortcomings in DP though) | ||
::* these [https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU limitations], which can be even more paradoxical with adapters in-between, can be sometimes worked around (even with respect to the official specification), particularly on linux. | ::* these [https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU limitations], which can be even more paradoxical with adapters in-between, can be sometimes worked around (even with respect to the official specification), particularly on linux. | ||
| − | ::* display controllers are also programmable ([https://www.guru3d.com/news-story/nvidia-releases-firmware-update-tool-to-support-displayport-1-3-and-1-4-displays.html as] [https://www.intel.com/content/dam/support/us/en/documents/graphics/HDR_Intel_Graphics_TechWhitePaper.pdf seen] [https://www.thesixthaxis.com/2010/06/17/how-ps3-outputs-3d-video/ many] [https://arstechnica.com/gaming/2016/09/whats-up-with-ps4s-surprise-firmware-update-is-4k-around-the-corner/ times]) and features are [http://www.edepot.com/playstation3.html#PS3_HDMI almost] never theoretically unachievable. | + | ::* display controllers are also programmable ([https://www.guru3d.com/news-story/nvidia-releases-firmware-update-tool-to-support-displayport-1-3-and-1-4-displays.html as] [https://www.intel.com/content/dam/support/us/en/documents/graphics/HDR_Intel_Graphics_TechWhitePaper.pdf seen] [https://www.thesixthaxis.com/2010/06/17/how-ps3-outputs-3d-video/ many] [https://arstechnica.com/gaming/2016/09/whats-up-with-ps4s-surprise-firmware-update-is-4k-around-the-corner/ times]) and features are [http://www.edepot.com/playstation3.html#PS3_HDMI almost] never theoretically unachievable. Still, OEMs on the cheap may even end up [https://linustechtips.com/topic/1306077-hdmi-21-on-3000-series-laptops/?do=findComment&comment=14485966 downgrading] what you'd expect from a product. |
:* 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. | :* 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. | :* 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 will 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]] meets [[Glossary:High dynamic range (HDR)|HDR]] | ||
| + | ::* many TVs may outright refuse (even when [https://www.rtings.com/tv/tests/inputs/supported-resolutions forced]) any non-standard (as in, anything that isn't commonly found in "home theatre" settings) resolution | ||