So I recently was handed down a Mac Pro 3,1. It comes with the following specs: 2.8GHz 8-Core Xeon 36GB DDR2 ECC Ram 640GB (2x320GB RAID-0 Software) 7200RPM Hard Drive nVidia GTX285 1GB Video Card Besides the hard drives, what else is possible to upgrade on this system? I was looking at the 3.2GHz Quad Xeons but the 150 watt power vs the current 80 watt is disappointing. Maybe upgrade to the 3.0GHz but for 200MHz, I don't know if I should spend the time and effort in that upgrade. I'm not looking to upgrade right now but maybe within 6 months down the road slowly. I'm surprised this machine is supported from 10.5 all the way till now. How likely would you think the system will be supported after Yosemite?