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.
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. Fully Tested and Backed By Our 30 Day Warranty Used
Brand: OWC Bus Speed: PC3-14900 (DDR3-1866) Total Capacity: 128 GB Capacity Per Module: 32 GB Number of Modules: 4 Number of Pins: 240
Type: DDR3 SDRAM Form Factor: FB-DIMM Memory Features: ECC Memory Part Numbers: OWC1333D3MPE32G Model: Mac Pro 6,1
ME253LL/A
MD878LL/A
MQGG2LL/A Compatible Model: [[Compatible Model]] A1481 Mac Pro 6,1