4GB DDR3 ECC 1866MHz SDRAM for the 2013 Mac Pro Model 6,1. Contains a single 4GB DRAM memory module that is specifically designed and SPD configured for the 2013 Mac Pro Model. These ECC DIMMs contain the Apple Specified Thermal EPROM Sensor.Specifications:
The following installation video covers the Mac Pro DDR3-1866Mhz.
Click here to find Apple's installation guide for the 2013 Mac Pro.