Hello!!

I need to find some answers..Have the head to point to exploit!

I have achieved a Mac Pro of the 2006, with 32 GB with a GT 8800 to what I want to install some processors x5365 that have bought, have a couple videos where see the process until having it updated to *Yosemite or The *Capitán.

But I have another one that has to arrive with an ancient Nvidia 7300, and two equal processors, same RAM, efi...

The question is:

Can I update the firmware EFI for than that Mac Pro works with the x5365, 32GB of ram, and the old Nvidia 7300 with an ancient operating system how Lion or Leopard? Or I Have to do flashing to the graphic card or whatever for that it works?

Any explanation would be to me very good! Already I am a bit confusedt..

Many thank you!