How do i get an os to use only one specific pci slot (if possible)?

[miguel snk amaro]

I want to have two different graphics cards on my computer. I have a GTX 680 on my computer and plan to get a Quadro in the future. I already have windows 7 and 8 dual booted on separate drives and they're both using the 680. So, when I get the Quadro I'm going to keep the 680 working with win 8 and switch win 7 to the quadro. If i do this how will the os know which card to use, hence my question.

 

[burritobob]

Consult the non-Indian windows tech support? This is beyond this section of the forum, you may want to check motherboard GPUs and Operating systems...