Well, It seems that my school is going to sell Mac Pro 2010 for just $100 which already installed 2X 2.4 quad core, 12gb ram, AMD 5870, and 1tb HDD. They recently replaced all Mac Pros to the newest model with full options. I def gonna buy it but there few things that I want to know about upgrading. 1. How can I install El Capitan on SSD instead of HDD? 2. If I change CPUs like 2.66 6 cores, will it affect RAM's max speed from 1066mhz to 1333mhz? 3. For PCIE SSD, do I need extra cable? 4. I can't upgrade RAM till I upgrade CPU first right? 5. Are there any solutions to enable hand off features for Mac Pro?