IBM 4 GB (2 x 2 GB kit) PC2-3200 CL3 Single Rank ECC DDR2 SDRAM RDIMM (73P4792) unleashes the full power of the Intel Processor with its 800 MHz Front Side Bus by matching the processor FSB bandwidth of 6.4 GBs with an equal, balanced 6.4 GBs of memory bandwidth.