Current System: Early 2009 Mac Pro 2.93 GHz Quad-Core Intel Xeon 16 GB 1066 MHz DDR3 ECC ATI Radeon HD 4870 512 MB Yosemite 10.10.2 Originally with 8G of memory which I've doubled. Originally with HDD, replaced with Samsung SSD 840 EVO 1TB to try to get some extra life out of the Mac Pro. I do light HD video editing, audio editing, Photoshop, and have 42K photos in my iPhoto library taking up 117G. The mac is used as a server for the house (although running normal Yosemite) to periodically share files from a second internal SSD. I also have an internal HDD used a a scratch drive for video work. Firewire attachments: 2 Drobo units (for Time Machine and video storage) and 4 G-Safe raid units for backup, storage. I always want at least 2 copies of important files). As time goes by and I use new programs and have more in the background processing seems to slow down. Future machine questions: 1) Given my usual software mix mentioned above will adding extra cores above the base 4 get me anything? I dream of a 12 core, but would it get me more meaningful performance than 4, 6, or 8? 2) Do I want 16G or 32G of memory (or something else)? 3) Given the tiredness of my old machine now, do I wait for some future processor refresh with the rumored V3 chips, or buy a current model because the difference between the V2 and V3 won't matter that much for what I do? All comments, suggestions, and thoughts gratefully appreciated.