128GB OWC Mac Pro Early 2009 Memory Matched Set (8x 16GB) PC-8500 1066MHz DDR3 ECC SDRAM Modules by OWC

Fast, Premium-Quality Memory Upgrades for Mac. Made for Mac, rigorously lab tested, OWC certified & guaranteed for life, to deliver the maximum in compatibility, performance and reliability.

• Compatible with Mac systems: Mac Pro 8-Core (Mid 2010 Model ID: MacPro5,1 2.4GHz), Mac Pro (Mid 2010 Quad-Core Model ID: MacPro5,1 2.8GHz, 3.2GHz, 3.33GHz), Mac Pro (Early 2009 8-Core Model ID: MacPro4,1 2.26GHz, 2.66GHz, 2.93GHz), Mac Pro (Early 2009 Quad-Core Model ID: MacPro4,1 2.66GHz, 2.93GHz, 3.33GHz), Xserve 8-Core (Early 2009 Model ID: Xserve3,1 2.26GHz, 2.66GHz, 2.93GHz), Xserve Quad-Core (Early 2009 Model ID: Xserve3,1 2.26GHz)
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  PC Desktops
  Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.
   
   
  IMPORTANT OWC NOTE:
  OS X versions prior to 10.9 Mavericks are unable to utilize more then 96GB RAM due to an operating system limitation. 128GB can be fully utilized by a 2009-2012 Mac Pro if running OS X 10.9 Mavericks or later, or if running Bootcamp with 64-bit versions of Windows XP and later, as well as with 64-bit versions of Linux. 
  
  OWC p/n OWC1333D3MPE8GB (8GB modules) and OWC1333D3MPE16G (16GB modules) require that all installed modules be of the same p/n OWC 8GB and/or 16GB modules. Other existing Apple or 3rd party 1GB, 2GB and 4GB modules are not supported for use with these kits and need to be removed when these modules are added.
  
  To utilize over 32GB of memory in your Mac Pro using 10.6.x or greater, you must boot into 64 bit mode. In 32 bit mode, all installed memory will show in system profiler but only up to 32GB will be actively used by the computer.