Does a pc with ryzen APU and a dGPU able to use the apu for video encoding while dGPU for rendering?

[orangpelupa]

So... Eons ago when I used Intel apu, I can tell most video encoder to use the Intel QSV for video encoding, leaving the dedicated gpu for rendering games (or anything else).

Thus allowing the pc to be a media server transcoder, obs streaming server, etc while gaming (or while I'm using it for machine learning stuff). With no performance impact.

I wonder, Does a pc with ryzen APU and a dGPU able to do that too?

Yes modern gpu should have very minimal performance impact doing video encoding but IME it could go to 10% hit, and when it goes buggy, it can tank the framerate to half.

 

[Deleted member 13524]

You probably can, but you're still losing performance because you're spending the CPU's L3 and RAM bandwidth.
And you're also losing performance when using a Ryzen APU vs. a CPU with similar number of cores and clocks because the former has a lot less L3.

 

[orangpelupa]

I didn't realize that haha. Seems non apu ryzen is better then.