• OWC 32GB (2 x 16GB) PC10600 DDR3 ECC-R 1333MHz DIMMs Memory
• Capacity 32GB (2 x 16GB)
• Compatible With Mac Pro 4-Core (Early 2009 - 2012) Model ID: MacPro4,1 Model ID: MacPro5,1 // Mac Pro 8-Core (Early 2009) Model ID: MacPro4,1
• Compatible With Mac Pro 6-Core (Mid 2010 - 2012) Model ID: MacPro5,1 // Mac Pro 8-Core (Mid 2010) Model ID: MacPro5,1 // Mac Pro 12-Core (Mid 2010 - 2012) Model ID: MacPro5,1
• Compatible With Xserve Xeon (Early 2009) Model ID: Xserve3,1

Product Description OWC MEMORY: Memory made for your Mac.

                                                                                  
At OWC, we want your Mac to perform faster and last longer. That’s why we engineer memory specifically tested and optimized for Mac. There’s OWC memory for nearly every upgradeable Mac, from the PowerMac G4 to the latest 2017 iMacs. Plus we make it easy to upgrade by yourself with step-by-step install videos, and included toolkits. It’s the easiest way to improve your Mac’s performance.

OWC memory is specifically engineered for compatibility with your Mac. We start with the highest-quality components, and then create memory to the exacting speed, capacity, and programming specifications of nearly every upgradeable Apple computer. The result is JEDEC-compliant memory that’s a perfect fit for a faster Mac.
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OWC PC8500 DDR3 ECC 1066 MHz 240 pin DIMM Memory For 2009 Mac Pro and Xserve

Compatible with:

• Mac Pro 8-Core (Mid 2010)(July, 2010) Model ID: MacPro5,1 (2.4GHz)
• Mac Pro (Mid 2010 Quad-Core)(July, 2010) Model ID: MacPro5,1 (2.8GHz, 3.2GHz, 3.33GHz)
• Mac Pro (Early 2009 8-Core)(March, 2009) Model ID: MacPro4,1 (2.26GHz, 2.66GHz, 2.93GHz)
• Mac Pro (Early 2009 Quad-Core)(March, 2009) Model ID: MacPro4,1 (2.66GHz, 2.93GHz, 3.33GHz)

 

• Xserve 8-Core (Early 2009)(April, 2009) Model ID: Xserve3,1 (2.26GHz, 2.66GHz, 2.93GHz)
• Xserve Quad-Core (Early 2009)(April, 2009) Model ID: Xserve3,1 (2.26GHz)

 

• PC Desktops: Compatible with Intel / AMD Process based PCs capable with the specifications listed above. ​

 

OWC 32.0GB (2 x 16GB) PC8500 DDR3 ECC 1066 MHz 240 pin DIMM Memory Upgrade Kit For 2009 Mac Pro and Xserve

• Size: 16GB (16384MB)
• 240-pin SDRAM DIMM
• 2048M x 72, Dual Rank ECC Memory Module
• Data Rate = 1066MHz
• Module Bandwidth 8.5GB/s
• CAS 7-7-7-20
• Voltage 1.5V
• Apple Specified Thermal Sensor

OWC Memory for Mac Pro Quad Xeon fully meets Apple's specifications with special attention to proper thermal specifications.
​IMPORTANT OWC NOTE:
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.

 OWC memory is hand-checked and tested for quality at each step in the manufacturing process. But it doesn’t stop there. We own and maintain state-of-the-art facilities that feature nearly every Mac manufactured over the past two decades. That’s because we don’t just relentlessly test for quality and reliability. We test in actual machines to make sure OWC memory is optimized to deliver a of superior performance in your Mac. It’s the OWC Difference. We’re laser-focused on helping you get the absolute most from your Mac. So we test the true memory limit of each Apple computer. We found that most Macs support more memory than the official factory maximum. With OWC memory, you can truly max out your Mac with up to double the factory-supported limit.

Adding OWC memory to your Mac is one of the best things you can do to extend the life, and accelerate the performance of your computer. It’s also an upgrade you can easily install yourself. Our library of installation videos guide you through each step in the process.