Kingston Technology 16GB Kit (4x4 GB) 1600MHz DDR3 PC3 12800 240-Pin ECC DIMM Memory for IBM KTM-SX316EK4/16G Four 4GB Modules of 1600MHZ DDR3 ECC Memory for IBM Backed by a lifetime warranty and free technical support From the industry leader in PC memory Designed and tested for compatibility in various IBM devices