4GB (2x 2GB) Kit 667MHz DDR2 PC2-5300 ECC CL5 Low Voltage SDRAM RDIMM Replacement Memory Module for Select IBM Systems - IBM Part Number 41Y2765 41Y2764
4GB (2x 2GB) Kit 667MHz DDR2 PC2-5300 ECC CL5 Low Voltage SDRAM RDIMM Replacement Memory Module for Select IBM Systems - IBM Part Number 46C7539 46C7536