Dual GPU cards - do you need to enable SLI/XFire in the drivers?

[MichaelD]

I've never had an SLI/XFire setup nor a dual-GPU card, so I'm unfamiliar as to "how to get it all working."

If I have a dual GPU card such as an HD4870X2, does it work with both GPUs running "out of the box" (after the driver is loaded of course) or do I have to go into the driver control panel and enable something?

Also, assuming there is a "SLI/XFire profile" for whatever game I'm playing, the game should use both GPUs, correct?

I'm trying to be proactive so I already know the procedure for when I do get my dual GPU card.

Thank you.

 

[MegaWorks]

The catalyst drivers would automatically set it on CrossFire.

Hope that answered your question!

Edit: Forgot your second question, the answer is yes the game should use both GPUs if the CF drivers do carry the profile for that specific game.

 

[Sylvanas]

Works in Crossfire out of the box, the CCC treats it as a single card within the control panel so no need to muck around setting things.

 

[MichaelD]

Great! That's exactly what I needed to know. Thanks guys. :beer: