OWC 16.0GB Memory Upgrade Kit - 4x4.0GB 1333MHz DDR3 ECC PC8500 SDRAM PC3-10600
16GB DDR3 1333MHz memory upgrade kit, comprised of 4x 4GB modules, designed specifically for the Mac Pro 8-core and Quad-core Xeon systems. With ECC Error Correction and Apple Specified Thermal Sensor. 240 pins, timings of 9-9-9-24 (CL9) at 1.5V.