Axiom 64GB Kit (8 X 8GB) PC2-5300 DDR2-667MHz ECC Registered CL5 240-Pin DIMM Dual Rank Memory. This Axiom 64GB Kit is a high-performance memory solution designed for advanced computing needs. This kit includes eight 8GB modules of PC2-5300 DDR2-667MHz ECC Registered memory, ensuring reliable and efficient data processing. With a CL5 latency and 240-pin DIMM configuration, these dual-rank modules are ideal for server and workstation applications, providing robust error correction (ECC) for improved data integrity and system stability.