The twin2x2048 6400 is a 2 gbyte matched pair of ddr2 sdram dimms this part delivers outstanding performance in the latest generation of ddr2 based motherboards it has been tested extensively in multiple ddr2 motherboards to ensure compatibility and performance at its rated speed this memory has been verified to operate at 800mhz at the low latencies of 5 this module is also available in a single module part