Samsung M321R4GA0BB0-CQKVG 32GB DDR5-4800 ECC RDIMM Server Memory

The Samsung M321R4GA0BB0-CQKVG is a 32GB DDR5-4800 ECC Registered DIMM (RDIMM) designed for compatible enterprise servers, data-center systems, and professional computing platforms. Samsung documentation and server compatibility listings identify this module as a 32GB DDR5-4800 RDIMM with 1Rx4 organization, providing high-speed, reliable memory for modern server environments.

Operating at 4800 MT/s, the M321R4GA0BB0-CQKVG delivers a PC5-38400 memory bandwidth classification. This makes it suitable for modern server processors and workloads requiring efficient data transfer between the CPU and system memory. The module uses DDR5 SDRAM technology and operates at 1.1V.

With 32GB of capacity in a single DIMM, the Samsung M321R4GA0BB0-CQKVG provides a practical balance between memory density and expansion flexibility. Multiple modules can be installed in compatible servers to achieve larger system memory configurations for virtualization, databases, cloud infrastructure, enterprise applications, and other memory-intensive workloads.

ECC Registered Memory

The M321R4GA0BB0-CQKVG incorporates ECC (Error-Correcting Code) technology, which is designed to detect and correct certain types of memory errors. ECC is particularly important in enterprise and data-center environments where data integrity and system stability are critical.

The module is a Registered DIMM (RDIMM). Registered memory uses register circuitry to help manage the electrical load between the memory controller and DRAM devices, making RDIMMs suitable for compatible server platforms and larger memory configurations.

DDR5-4800 Performance

The module operates at DDR5-4800 / 4800 MT/s, with a PC5-38400 specification. Exact-part-number sources identify the M321R4GA0BB0-CQKVG as a DDR5-4800B 4Gx80 RDIMM 1Rx4 32GB module.

The module is also commonly specified with CL40 CAS latency, 1.1V operating voltage, and a 288-pin DIMM form factor.

Actual operating speed may depend on the server platform, processor generation, BIOS configuration, number of installed DIMMs, and memory population rules.

1Rx4 Organization

The M321R4GA0BB0-CQKVG uses a 1Rx4 single-rank x4 organization. This is an important compatibility characteristic when selecting memory for enterprise servers.

The exact Samsung part is listed by multiple sources as 1Rx4, including server and platform compatibility documentation.

32GB Server Memory Capacity

The 32GB capacity makes this module suitable for server configurations where customers need to expand memory while maintaining additional DIMM slots for future upgrades.

Multiple 32GB modules can be combined in compatible systems to support larger memory configurations for:

• Server virtualization
• Cloud computing
• Database applications
• Enterprise software
• Application servers
• Web servers
• Data analytics
• Virtual desktop infrastructure
• Professional computing
• Business applications
• Data-center workloads

Enterprise Server Compatibility

The M321R4GA0BB0-CQKVG has been included in server and motherboard memory compatibility documentation. For example, MSI’s server memory validation documentation lists the Samsung M321R4GA0BB0-CQK family as 32GB DDR5 RDIMM, 4800 MT/s, 2R*8 in one platform configuration, while other QVL documentation specifically identifies the -CQKVG variant as 32GB, 1Rx4, DDR5-4800 ECC Registered, 288-pin, 1.1V.

Because memory configurations can vary by platform and BIOS, customers should always verify compatibility with their specific server model before purchase.

Technical Specifications