73P3233 - IBM 1GB Kit (2 X 512MB) DDR-400MHz PC3200 ECC Registered CL3 184-Pin DIMM Single Rank Memory

This DDR SDRAM RDIMM PC3200 memory option, which is comprised of a pair of 512MB R DIMMs and must be installed in pairs, enables synchronous DRAM to reach much higher performance ratings and I/O bandwidth compared to previous memory architectures. The capacity of this pair of memory R DIMMs is a key component in breaking through the 4GB memory limit of current 32-bit operating systems.