The IBM 00D4968 is available from Calhoun Technologies. Calhoun Tech can help your company save up to 80% on IT Hardware. Manufacturer: IBM Part Number: 00D4968 Details: IBM 1600 Mhz Pc3-12800 240-Pin Cl11 1.5V Ddr3 Sdram Ecc Dual Rank X4 Registered Rdimm Genuine Ibm Memory For System X Server