Eight Core 2.26, 2.66, 2.93

Compatible upgrade for:
MacPro4,1 - A1289 - EMC - 2314   Eight Core 2.26GHz
  MacPro4,1 - A1289 - EMC - 2314   Eight Core 2.66GHz
  MacPro4,1 - A1289 - EMC - 2314   Eight Core 2.93GHz
  How to find Model ID
  Installation videos
Standard RAM:   6GB    
Maximum RAM:  128 GB*  
RAM Slots: 8  

By default, 6 GB of RAM was installed as six 1 GB modules. Two slots free.

*Apple officially supports 32 GB of RAM in this model, but 3rd parties first discovered that it is capable of using 64 GB of RAM when booting MacOS X 10.6 "Snow Leopard" in 64-bit mode. Later, 3rd parties bumped this unofficial maximum RAM to 96 GB running Mac OS X 10.6 or 10.7, and yet again to 128 GB, but only when running a 64-bit version of Windows XP or later or Linux. Mac OS X only can support 96 GB of RAM.

*Eight memory slots -- four per processor -- are provided on "slide-out" processor trays. Note that this model supports triple channel memory addressing and performance is improved by installing memory in groups of three.




 The following items are also compatible with this product...............................

Internal Hard Drives




External Hard Drives





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