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Can I install Lion on an early MacPro (1,1) with 2 Dual-Core Intel Xeon processors running at 2.66 GHz?

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: 10 GB
Bus Speed: 1.33 GHz
Boot ROM Version: MP11.005C.B08
SMC Version (system): 1.7f10

  • Asked by Francis R
  • Sep 13, 2011

4 Answers from the Community

  • Best Answer

    Yes; Lion will run on all 64-bit intel chip macs. This includes all Mac Pro models and all Core 2 Duo and above machines. This information is listed on the 'tech specs' tab for Mac OS X.

    • Answered by Simon B from Sandy Bay
    • Sep 15, 2011

  • Yes you can easily

    • Answered by Anthony D
    • Jan 19, 2012

  • Yes, just check your graphics card is also compatible before upgrading. I had to replace my Radeon x1900 with a 5770 for compatibility with Lion.

    • Answered by Tony P from Tiburon
    • Jun 25, 2012

  • Did that work Francis?. I have exactly the same set up.

    • Answered by Michael O from Brooklyn
    • Apr 5, 2012