Hello everyone, I was looking for a mac pro 2008 8 cores, on Ebay, and I find a lot but I can not understand what kind of processors mountain. I must installarci Yosemite or Mavericks. Asking sellers, often can not answer, I'm interested in a mac pro 2008 8-core 2.80 GHz XEON processors that have 5300 or 5400 or Clovertown Harpetown that are the best on the market. NO Xeon 5100 Woodcrest because they tell me that are not good for video editing and do not support Mavericks. How do I know which processors are in the mac pro 2008 ?? I'm afraid to make mistakes purchase, there is a way to understand such as Xeon 5100 till date have been installed on the mac pro ?? Thanks.