64GB (2 x 32GB) OWC Memory Upgrade module PC3-10600 DDR3 ECC-R 1333MHz DIMM for Mac Pro Late 2013 models
Compatible Model:
Mac Pro (December, 2013) Model ID: MacPro6,1 - A1481 - EMC 2630 | 2.7GHz 3.0GHz, 3.5GHz, 3.7GHz

IMPORTANT MAC PRO 2013 UPGRADE NOTE:
Apple Mac Pro 2013 models utilize thermal enabled ECC-Registered and ECC non-Registered memory. ECC Registered and non-Registered memory may not be mixed. Existing factory or post-installed 4GB or 8GB ECC non-Registered modules need to be removed prior to installation of OWC 8GB, 16GB, or 32GB server-grade ECC-Registered memory upgrades.

1. Apple Mac Pro 2013 models utilizes ECC non-Registered for 4GB and 8GB per slot options and ECC Registered for 16GB (and larger) per slot options. Any existing 4GB and 8GB ECC non-Registered modules cannot be mixed with 16GB and larger ECC-Registered modules and will need to be removed in order to utilize these higher density memory upgrade options.

2. Special 32GB module use information: Due to processor design and memory architectures, 32GB module utilization occurs at a bus speed of 1066MHz with Apple Mac Pro 2013 E5-16XXv2 4-Core, 6-Core, and 8-Core processor equipped models, 800MHz with factory 12-Core or after-market E5-26XX equipped models. Utilization of 2 or more 32GB modules minimum is recommended. Overall performance with applications and workflows that are able to utilize higher available memory, remains exceptional.

Product Specs:

• Size: 64GB (2 x 32GB)
• 240-pin SDRAM DIMM
• 2048M x 72, Dual Rank ECC Registered Memory Module
• Data Rate = 1333MHz
• Module Bandwidth 10.6GB/s
• CL 9
• Voltage 1.5V
• Apple Specified Thermal Sensor
• RoHS Certified
• Warranty-Safe Upgrade.
• OWC Memory Lifetime Limited Warranty including Advanced Replacement Program

OWC Memory for Mac Pro 2013 fully meets Apple's specifications with special attention to proper thermal specifications.