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Will using onboard gfx lower load on gfx card?
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NHT  
#1 Posted : Tuesday, July 25, 2017 3:06:00 PM(UTC)
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As per the title guys, would using the motherboard gfx chip to display the vMix GUI free up more resources for encoding etc by the gfx card?
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IceStream  
#2 Posted : Tuesday, July 25, 2017 6:22:09 PM(UTC)
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@ NHT

Although "Multiadaptor Technology" is a feature of DirectX 12, I'm not sure if vMix takes advantage of such sharing or splitting of the workload, nor am I going to pretend to know or understand how any of it works.
As near as I can tell, vMix only utilizes one graphics adaptor (as there is no option that I know of for sharing) and requires at least DirectX 10 (which doesn't have Microsoft's Multiadaptor technology) and so my guess would be that NO, you will not be able to Share the load (at least not yet).
Hopefully, Martin can chime in and give a more accurate answer as to what vMix's capabilities really are and if it is technology that vMix can actually take advantage of.
Just my thoughts.


Ice
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Mathijs  
#3 Posted : Tuesday, July 25, 2017 7:24:35 PM(UTC)
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No, it is best to keep it all on the same GPU. If not the system needs to copy frames from one to the other, resulting in less bandwidth available and higher latency.
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admin  
#4 Posted : Tuesday, July 25, 2017 10:57:12 PM(UTC)
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Mathijs wrote:
No, it is best to keep it all on the same GPU. If not the system needs to copy frames from one to the other, resulting in less bandwidth available and higher latency.


This is key, graphics sharing only has performance benefits when you can cache the graphics on the GPU for relatively long periods of time,
with live video constantly updating, sharing ends up putting a significant drag as everything is copied and duplicated.
(Which is why Optimus isn't as fast as G-Sync laptops, as G-Sync requires a direct NVIDIA connection to the display to work, bypassing the integrated graphics step in Optimus)

Regards,

Martin
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NHT  
#5 Posted : Wednesday, July 26, 2017 3:16:28 AM(UTC)
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Thanks for all the replies guys, every day's a school day!
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