PC 5770 and Mac 5770 in same machine..

Can I get a PC 5770 and a Mac 5770 to work in the same machine? 5,1

I have the PC one in the 3rd slot, it recognizes it kinda...

It says this for PCI card info
There was an error while gathering PCI card information.

and ATY,hoolock when I click on Graphics. Should this card be in the 2nd slot instead? I am just worried about heat on the Mac 5770.