What Happens To The 2nd GPU if A Game Doesn’t Utilise It?

[Knight77]

Does having NVLink enabled have a negative effect on performance or any kind of hit on the CPU if the game doesn’t support or use the 2nd GPU?

 

Or does the 2nd GPU simply stay idle?

 

 Is it better to disable NVLink when running games that only use 1 GPU or does it make no difference in leaving SLI on?

 

will the 1st GPU not be only 50% utilised in this case as NVLink is on but the 2nd GPU isn’t doing anything?

 

or is that not how it works and it will simply 100% the first GPU and leave the 2nd one idle?

 

I hope my question is clear!

[PlayStation 2]

If a game truly doesn't support a second GPU, it shouldn't do anything; it'll just idle.

Some games, however, will be buggy and try to use the second GPU even though it really won't get used. In those cases, you should disable NVLink/SLI.

[Turtle Rig]

20 minutes ago, Dan Castellaneta said:

If a game truly doesn't support a second GPU, it shouldn't do anything; it'll just idle.

Some games, however, will be buggy and try to use the second GPU even though it really won't get used. In those cases, you should disable NVLink/SLI.

Also SLI is pretty much dead and nVIdia knows it.

[Knight77]

3 hours ago, Dan Castellaneta said:

If a game truly doesn't support a second GPU, it shouldn't do anything; it'll just idle.

Some games, however, will be buggy and try to use the second GPU even though it really won't get used. In those cases, you should disable NVLink/SLI.

 

Ah ok. 

 

How would i know what is happening?