AddOn 16GB PC3-12800 DDR3-1600MHz ECC Registered CL11 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module. The SNP20D6FC/16G-AM by AddOn is a high-performance 16GB DDR3 memory module. With a speed of 1600MHz and a CAS latency of CL11, this ECC registered memory ensures data integrity and reliability. The 240-pin DIMM operates at a low voltage of 1.35V, making it energy-efficient. Ideal for servers and workstations, this dual-rank module provides stable and efficient performance for demanding applications.