Hi! I just ordered myself an 06 mac pro for general use, and i want to upgrade the os (and cpu, ram...) now, from what i read the latest os available is 10.11 through a magical boot.efi. my mac still has the original 7300 gt cpu and probably wont work. so, does anybody knows which is the most basic cpu that will run 10.11 with all the features enabled? something in the 70$ range... Im thinking more about an and card, as from my understanding will flash easier to enable boot screen. Oh and what software should i use to flash it? Thanks and sorry for being a noob I just can't find an answer anywhere.