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Tangentially related, does anyone know if there is a DisplayPort-to-USB-C/Thunderbolt cable one could use to connect a GPU (DisplayPort) to a monitor (USB-C/Thunderbolt)?

I'd like to connnect Titan RTX (DisplayPort) to LG's 31" 5k2k (USB-C) but all I see are cables for the opposite direction, i.e. USB-C/Thunderbolt to DisplayPort, for MacBooks. Other DisplayPort on LG is already used by another computer (gaming PC with 2080Ti) and HDMI can't do 5120x2160@60Hz.



The Delock 63928 https://www.delock.de/produkte/G_63928/merkmale.html?setLang... is in the direction you want but I am not 100% it can do DisplayPort 1.4. AmazonGlobal ships it globally from https://www.amazon.co.uk/DeLOCK-Displayport-Adaptor-type-Mon... please test and report back either at https://www.reddit.com/r/UsbCHardware/comments/co23kd/i_have... and mention /u/chx_ so I see your report or just email me at chx1975 gmail . While reddit has unsavory parts, we keep our little corner focused on USB C knowledge.

Alternatively, you can power the Gigabyte GC Titan Ridge from a mining riser, no PCIe is necessary, feed it DisplayPort signals, get Thunderbolt signals. Titan Ridge is DP 1.4 capable.


Thanks, ordering that DeLOCK now! Will get back to you when I test it!

Titan Ridge is an option as well though I want to use it in an x399 Zenith Extreme board (DeepLearning rig) and that might be challenging (in theory it should work but the board is super buggy).


> Tangentially related, does anyone know if there is a DisplayPort-to-USB-C/Thunderbolt cable one could use to connect a GPU (DisplayPort) to a monitor (USB-C/Thunderbolt)?

Edit: See other comment. Looks like someone actually did manage to create a cheap adapter, and was able to power it from DisplayPort as well. I'd love to hear if anyone knows how well this works.

I think this would be quite hard to do inexpensively, as USB-C hosts have to be configured by the client to send Display Port signals on the SuperSpeed lanes. [1] If the monitor (client) doesn't detect a host, it's probably not going to try to interpret the SuperSpeed signals as DP. It seems to me that an adapter would likely have to emulate a USB-C host supporting DP alt mode. This would at least require external power (unless your monitor's USB-C port is powered), and would more likely require the adapter to use one of your USB 3 ports so that it can also support devices on any monitor USB hubs.

[1] https://www.totalphase.com/blog/2019/11/how-displayport-alt-...


I'll see, I am worried it won't work as well as that LG monitor is like 1st gen bleeding-edge tech where incompatibilities might arise. MacOS users definitely had issues with it at first and those use USB-C connector on the display, but DP/HDMI works fine so far.




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