The M321RAGA0B20-CWKZJ is a high-performance DDR5 4800 module with 288 pins, designed and manufactured by Samsung. It stands out in the market with its impressive specifications of DDR5-4800B 16Gx80 RDIMM 2S2Rx4, which translates to a total capacity of 128GB. This module belongs to the advanced category of DDR5 4800 modules, indicating its ability to operate at a peak transfer rate of 4800 MT/s, which is significantly higher than its predecessors. This product is specifically tailored for servers and high-end computing systems that demand large memory capacities and high-speed data transfer rates. The '2H 3DS 8Gx4 40C' descriptor in its name indicates that it uses a two-channel, 3D stacked configuration with 8Gx4 dies, which are optimized for 40°C operating conditions. This module is ideal for data centers, cloud computing infrastructures, and enterprise-grade servers where reliability, performance, and energy efficiency are crucial.