8Gb (2X4Gb) Memory Ram Compatible with Ibm System X3500 M2 7839 Ddr3-Pc1333 Ecc Reg For Servers Only By CMS B37 240PIN DDR3 DIMM ECC REGISTERED PC3-10600 , DDR3-1333MHZ 2 Pieces Kit This Memory is intended for Server Only. Not for Desktop