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Extra Nvidia card just for Nvenc (livestreaming) ?

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Bit of an odd question, but I was wondering.
A decade or so back...when PhysX was going to be a thing... some people but a lower end Nvidia card as an extra card just to do the PhysX for the system (though I think that ability was blocked later on by our consumer friendly green giant Nvidia).

But now im wondering about a modern day equivalent, could you run for example an AMD RX5700 as your main card and then buy and install something like a GTX1650 (the lowest end Turing based Nvidia card) and have that run along side it in a PCI-E slot on your motherboard but have tis sole purpose be Nvenc Encoding for OBS or Twitch to let it do the work for a livestream and thereby not suffer much of any performance loss?
 

Regeneration

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Impossible. You can buy HDMI capture card, plug it to your graphics card, use display mirror mode, and then stream that feed.
 
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Simply use the AMD equivalent instead, it works too.
 
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Such thing exists for 2 Nvidia cards. During mining craziness mix of AMD/NVidia cards was possible with some issues. So, if current drivers could coexist, it should be possible. If you have an option to try before buy somehow that is best way to prove theory, you maybe don't need latest and greatest card, find used 950/960/1050/1060/xxxx for a few days.
 
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At least on Laptops they coexist without any problems, see the new Ryzen laptops. Don't know about desktop though.
 
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Even if you could it sounds absurd to me. Why not use the AMD encoder ?
 
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ReLive has this function inbuilt, btw.
 
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I don't know if the streaming software supports this, but in theory it is possible.

In fact, I have a similar rig set up with a Athlon 200GE and a GTX1050. The monitor runs off the 200GE, the GTX1050 is in there only so I can use the rig to transcode video using NVENC. The software I use has a drop down so I can select which GPU in the system is going to do the encoding.
 
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its pretty clear that AMD's encoder is nowhere near as good (sadly) as Nvidia's Nvenc on Turing.
Yes, it isn't, but it works, if the bitrate isn't absurdly low they're indiscernible. There is a strange elitism when in comes to video encoding and streaming, 90% of people watching wouldn't be able to tell which is which (or even care at all) if their life dependent on it. I take that back, they'd probably get it right 50% of the time, which is a coin flip.
 
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Yes, it isn't, but it works, if the bitrate isn't absurdly low they're indiscernible. There is a strange elitism when in comes to video encoding and streaming, 90% of people watching wouldn't be able to tell which is which (or even care at all) is their life dependent on it. I take that back, they'd probably get it right 50% of the time, which is a coin flip.
True, and if you truly want the best quality - x264 is still the best.
 
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