I currently own an 8-core 2.4 Ghz MacPro 5,1 with 12 GB 1066 DDR3 RAM and 4 internal hard drives. I'm interested in upgrade suggestions so that I can extend its usefulness for another 5 years. 2.93 GHZ CPUs or Hex core? PCI SSD options - leaning towards Samsung 830s - not certain about PCI cards I'll use the SSIs for my sample libraries. Not certain about the OS I use my Mac primarily for music production and light video work so I don't know if a graphic card is necessary. I have an ATI Radeon HD 5770 with 1024 MB. I'm still running Snow Leopard 10.6.8. Too many issues with Logic and multiple displays the last time I checked. (I have two displays.) I'm open to all suggestions.