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mgrayeb · 12-18-2019, 08:57 AM

Thank you Alban for your detailed explanation. I do see, upon checking the specs for the HP Elite 14" display, that in the footnotes it mentions a requirement for either Thunderbolt or DisplayPort Alt Mode.

I am plugging the USB-C Cable from that display into the Thunderbolt port on my laptop, but perhaps that port also has DisplayPort Alt capabilities built-in that are not called out in the laptop's specs and perhaps the display is using that technology in this case instead of defaulting to Thunderbolt, even though it's plugged into a Thunderbolt port?

If yes, then based on your comments, my understanding is that it would only be using the Graphics Card's resources, and not the CPU's resources. If that's correct, then my sense is that it would not be simultaneously (alongside vMix) downloading data from the GPU to the CPU during my live stream and thus I wouldn't be at risk of throwing off the vMix opitimization of that process and the resulting high render times during my live streams.

I guess the way to confirm whether the display is only using GPU resources would be to monitor both CPU and GPU usage in the task manager when connecting the display.

And then, similarly, monitoring impact on CPU and GPU with the other 14" display that I have (the USB-powered one that employs DisplayLink technology) and whether that might be simultaneously trying to download data from the GPU to the CPU while vMix is doing the same -- although I appreciate your point about the minimal amount of data involved in the case of an HD (1920 x 1080) display.

I hope I've understood your comments correctly and again thank you for your help.

Best regards,

Mike

12-18-2019, 08:57 AM	#7
mgrayeb Junior Member Join Date: Dec 2019 Posts: 4	Thank you Alban for your detailed explanation. I do see, upon checking the specs for the HP Elite 14" display, that in the footnotes it mentions a requirement for either Thunderbolt or DisplayPort Alt Mode. I am plugging the USB-C Cable from that display into the Thunderbolt port on my laptop, but perhaps that port also has DisplayPort Alt capabilities built-in that are not called out in the laptop's specs and perhaps the display is using that technology in this case instead of defaulting to Thunderbolt, even though it's plugged into a Thunderbolt port? If yes, then based on your comments, my understanding is that it would only be using the Graphics Card's resources, and not the CPU's resources. If that's correct, then my sense is that it would not be simultaneously (alongside vMix) downloading data from the GPU to the CPU during my live stream and thus I wouldn't be at risk of throwing off the vMix opitimization of that process and the resulting high render times during my live streams. I guess the way to confirm whether the display is only using GPU resources would be to monitor both CPU and GPU usage in the task manager when connecting the display. And then, similarly, monitoring impact on CPU and GPU with the other 14" display that I have (the USB-powered one that employs DisplayLink technology) and whether that might be simultaneously trying to download data from the GPU to the CPU while vMix is doing the same -- although I appreciate your point about the minimal amount of data involved in the case of an HD (1920 x 1080) display. I hope I've understood your comments correctly and again thank you for your help. Best regards, Mike Last edited by mgrayeb; 12-18-2019 at 09:02 AM.