Hi, I have a mac pro 5.1 2010 (Quad 2.8) and recently bought an Intel W3680 3.33GHz to become a hexacore, but I have a question: I currently own a kit of DDR3 ECC PC8500 12GB (3x4GB) of RAM I have purchased from OWC. This memory is compatible with the processor W3680? Or I need to buy a PC10600 DDR3 ECC Kit? Right now I have the budget, it is recommended that I update with this type of memory and then acquire the PC10600? Or should I wait to get the money for PC10600 memory and can upgrade both components? Thank you in advance for your help.