Hi. I've pretty much decided to put a GTX 750Ti in my early 2009 Mac Pro. Can I leave the original GT120 in there as well? I probably don't need it but I figured that as the new card is pretty easy going in terms of power consumption, perhaps I could leave the old card in there, just in case I ever need to access the EFI boot menu for diagnostic or recovery purposes or whatever. On the other hand, I guess I could just take the GT120 out and leave it on the shelf for that purpose.