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View Full Version : Madvr using crossfirex


ikaros
14th May 2015, 16:39
Hello everybody, I use mpc player with madvr video renderer. I use two R9 290 crossfirex and I' m wondering how I can watch video while running both GPUs cards in 100%(usage), because I now see that only one card is running.:confused:

Asmodian
14th May 2015, 17:38
madVR does not support crossfire or SLI at all.

Performance is actually slightly worse when Crossfire or SLI is enabled.

pirlouy
14th May 2015, 17:48
Even the drivers developers don't like crossfire/SLI.

http://www.gamedev.net/topic/666419-what-are-your-opinions-on-dx12vulkanmantle/#entry5215019

If you've ever tried to independently build an app that uses multi GPU - especially if, god help you, you tried to do it in OpenGL - you may have discovered this insane rabbit hole.

detmek
14th May 2015, 18:08
And why would you want to run both GPUs at 100%?
Just find settings that give you picture quality you want. GPU usage is not quality indicator. Some more demanding settings will give you worse quality. For example, Lanczos or Spline 8 taps produces visible ringing.
Some may or may not increase subjective visual quality. For example, if you can not see a difference between NNEDI 32 neurons and 64 neurons there is no point for you to use 64 neurons, or 128.

ikaros
15th May 2015, 00:14
which programm can do that? (multi Gpu's)
when i go with more than 64 neurons i loose many frames
all about with my thinking is.. with 2 cpu's probably i can do it:confused::confused::confused:

Asmodian
15th May 2015, 00:42
which programm can do that? (multi Gpu's)
when i go with more than 64 neurons i loose many frames
all about with my thinking is.. with 2 cpu's probably i can do it:confused::confused::confused:

I don't think there is anything that supports Crossfire for video rendering. Don't go more than 64 neurons. :p