Can you mix two different types of video cards?

Can you put an ATI card in with an Nvidia and get better results? Also can you mix two graphics card of the same company and get good results or do they need to be the same type?

Can you mix two different types of video cards?
No ATI with Nvidia





For same GPU type, ATI is very strict. Nvidia is not as strict - you can mix different models - 8600GT with 8800GT, but it is not guaranteed to work. SLI same models, but not by the same brand - Sapphire 8600GT with MSI 8600GT OC will work.





ATI


http://game.amd.com/us-en/content/images...





You must have an SLI/xFire motherboard
Reply:In order to "mix" two cards together, you must have two cards of the same brand. For example, you need two nVidia cards in order to mix them, they don't have to be the same model but have to have the capability. Same goes for ATi as well. Yes you will get better results. But you need a bridge, connecting the two cards together in order for this to work. You cannot just drop two video cards in without linking them physically and expect it to work. nVidia calls this feature SLI and I think ATi calls it Crossfire or something like that. Or maybe that's the name of a card, I'm not too sure about ATi.
Reply:That's just like asking if you can mix two different viruses together.