Mac pro 2 operating system upgrade

I have a Mac Pro 2, here are the specs. My question is, why can't update OS X Lion

Processor 2 x 2.66 GHz Dual - Core Intel Xeon

Memory 4 GB 667 MHz DDR2 FB-DIMM

Graphics  NVIDIA GeForce 7300 GT 256 MB

Software  Mac OS X Lion 10.7.5 (11G 63)


Because EFI computer is 32-bit.


Tags: Mac OS & System Software

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