128GB (32GBx4) Mac Pro Memory for 2013 Model 6,1. Contains four 43) 32GB DRAM memory modules that are specifically designed and SPD configured for the 2013 Mac Pro Model. Due to configuration of the 2013 Mac Pro processor, these modules will register at a bus speed of 1066-MHz.Specifications:
96GB, PC3-10600, DDR3-1333, 1333Mhz, 8.5GB/s Bandwidth, CAS 9-9-9-24, 5ns Cycle Time, ECC, Dual Rank, RoHS Certified, 256x72, 1.5V, 240pin DIMMs.
These ECC DIMMs contain the Apple Specified Thermal EPROM Sensor.
The following installation video covers the Mac Pro DDR3-1866Mhz.
Click here to find Apple's installation guide for the 2013 Mac Pro.