Q: OS X Mavericks cannot be installed on this computer.

OS X Mavericks cannot be installed on this computer.

Model Name:          Mac Pro

  Model Identifier:          MacPro1,1

  Processor Name:          Dual-Core Intel Xeon

  Processor Speed:          2.66 GHz

  Number of Processors:          2

  Total Number of Cores:          4

  L2 Cache (per Processor):          4 MB

  Memory:          12 GB

  Bus Speed:          1.33 GHz

  Boot ROM Version:          MP11.005C.B08

  SMC Version (system):          1.7f10