The CM2X512-4300C3 is a 512MByte, two-rank DDR2 SDRAM DIMM designed for extreme speed. This part delivers outstanding performance in the latest generation of DDR2-based motherboards. It has been tested extensively as pairs in multiple DDR2 motherboards to ensure compatibility and performance at its rated speed. This memory has been verified to operate at 538MHz at the low latencies of 3-3-3-8.