M321RAJA0MB2-CWM - 128GB DDR5-5600 ECC RDIMM | Samsung
MPN: M321RAJA0MB2-CWM β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2499 | $2,499.00 |
| 10 | $2399 | $23,990.00 |
| 100 | $2299 | $229,900.00 |
| 500 | $2199 | $1,099,500.00 |
| 1,000 | $2099 | $2,099,000.00 |
Drop-in alternatives for M321RAJA0MB2-CWM β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
M321RAJA0MB2-CCP
β Drop-Inπ Reference alternative (not in catalog)
M321RAJA0MB0-CWM
β Drop-Inπ Reference alternative (not in catalog)
MEM-DR512L-SL01-ER56
β Drop-Inπ Reference alternative (not in catalog)
NEMIX RAM 128GB DDR5-5600 2Rx4 RDIMM
β Drop-Inπ Reference alternative (not in catalog)
M321RAJA0MB2-CWM Maximum Ratings & Electrical Characteristics
| Memory Type | DDR5 SDRAM |
| Form Factor | 288-Pin RDIMM |
| Capacity | 128 GB |
| Data Rate | 5600 MT/s |
| Bandwidth Class | PC5-44800 |
| CAS Latency | CL46 |
| Operating Voltage | 1.1 V |
| Organization | 2Rx4 (Dual Rank x4) |
| ECC | Yes (Registered ECC) |
| Buffered/Registered | Registered (RDIMM) |
| DRAM Package | FBGA (40x 8Gx4 devices per Compuram listing of CCP sibling) |
| Compliance | JEDEC DDR5 RDIMM compliant |
| Compatible Platforms | Intel Xeon / AMD EPYC servers (Dell, HPE, Lenovo, Supermicro) |
| Rank | Dual Rank |
| Application Class | Enterprise Server / Data Center |
M321RAJA0MB2-CWM fbga (40x 8gx4 devices per compuram listing of ccp sibling) Pin Configuration Guide
Complete pinout information for M321RAJA0MB2-CWM (fbga (40x 8gx4 devices per compuram listing of ccp sibling) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for M321RAJA0MB2-CWM.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
M321RAJA0MB2-CWM is suitable for 6 applications: Enterprise Virtualization Hosts, AI / Machine Learning Training Clusters, In-Memory Databases and Analytics, Cloud and Data Center Compute Nodes, High-Performance Computing (HPC), Edge and Telecommunications Servers.
Enterprise Virtualization Hosts
The M321RAJA0MB2-CWM fits virtualization platforms because consolidation is capacity-bound: each running VM consumes a fixed memory reservation, so doubling DIMM capacity directly doubles achievable VM density. At 128GB per module, a two-socket server with 32 DIMM slots can reach 4TB, supporting hundreds of mid-sized VMs per host. The 5600 MT/s dual-rank x4 configuration provides the interleaved bandwidth hypervisors need for live migration and memory ballooning, while ECC registered operation with on-die ECC protects against the uncorrectable errors that would otherwise crash a hypervisor hosting dozens of workloads. Populate channels symmetrically per the vendor QVL to achieve full 5600 MT/s across all memory controllers.
Recommended
AI / Machine Learning Training Clusters
AI training nodes need large host memory to stage datasets, run dataloaders, and feed GPU HBM without starvation. The M321RAJA0MB2-CWM's 128GB per DIMM lets each GPU server carry 1-2TB of host RAM in few slots, and its PC5-44800 bandwidth class keeps CPU-side preprocessing from becoming the pipeline bottleneck. Distributor reviews of this exact part explicitly target AI workloads. Because x4 DRAM devices offer stronger error recovery than x8, the 2Rx4 organization suits the weeks-long uninterrupted training runs typical of large language models, where a single uncorrected memory error would force a costly restart. Pair with high-wattage GPU platforms validated for DDR5-5600 RDIMMs.
Recommended
In-Memory Databases and Analytics
In-memory databases such as SAP HANA-class engines and large analytical stores size their working set entirely in DRAM, making per-DIMM capacity the dominant purchasing metric. The M321RAJA0MB2-CWM delivers 128GB per module at 1.1V, so a memory-optimized server reaches multi-terabyte configurations without LRDIMM latency overhead. Its 5600 MT/s rate and dual ranks sustain the random-access throughput columnar scans demand, while registered ECC with on-die ECC addresses the enterprise requirement for data integrity on financial and transactional workloads. Memory4Less positions this exact part for advanced analytics deployments. Match all channels with identical modules to preserve deterministic query latency.
Recommended
Cloud and Data Center Compute Nodes
Cloud providers standardize on one validated memory SKU per server generation to simplify spares and RMA. The M321RAJA0MB2-CWM, being JEDEC DDR5 RDIMM compliant and platform-qualified across Dell, HPE, Lenovo, and Supermicro (per CoreWave Labs), is a natural such standard SKU for general-purpose compute fleets. Its 128GB density supports right-sizing instances from small containers to large bare-metal tenants, and the 1.1V DDR5 operating voltage cuts memory subsystem power roughly 15-20% versus equivalent DDR4 capacity, improving fleet PUE. Standard 288-pin RDIMM serviceability allows hot-planning replacement under vendor maintenance windows without board-level work.
Recommended
High-Performance Computing (HPC)
HPC nodes in CFD, genomics, and weather modeling are frequently memory-bandwidth and capacity bound rather than core bound. The M321RAJA0MB2-CWM supplies 44,800 MB/s peak per module, and populating all eight channels per socket multiplies this into hundreds of GB/s of aggregate bandwidth that scientific kernels require. The dual-rank organization enables rank interleaving, which hides DRAM refresh latency in streaming workloads. Its x4 device width gives fine-grained ECC, important for month-long simulation runs on government and research clusters. Where the platform QVL allows, the DDR5-6400 sibling -CCP adds roughly 14% more bandwidth for the same footprint.
Recommended
Edge and Telecommunications Servers
5G core, MEC, and network-function-virtualization servers need near-data-center memory capacity in compact, thermally constrained enclosures. The M321RAJA0MB2-CWM's DDR5 1.1V rail with on-module PMIC reduces heat load in short-depth edge servers, and 128GB per DIMM achieves required capacity with fewer slots occupied - freeing the chassis for storage or acceleration cards. JEDEC compliance guarantees interoperability with the standard telecom server platforms used by network OEMs, and registered ECC maintains carrier-grade uptime targets for Always On network functions. Verify the platform QVL for 5600 MT/s operation at extended ambient temperatures typical of unconditioned edge sites.
Recommended
Recommended Products Summary
Engineering reference data for M321RAJA0MB2-CWM β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M321RAJA0MB2-CCP | M321RAJA0MB0-CWM | MEM-DR512L-SL01-ER56 |
|---|---|---|---|---|
| Package | 288-Pin RDIMM | 288-Pin RDIMM - same | 288-Pin RDIMM - same | 288-Pin RDIMM - same |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Supermicro (Samsung OEM silicon) |
| Capacity | 128 GB | 128 GB | 128 GB | 128 GB |
| Data Rate | 5600 MT/s | 6400 MT/s | 5600 MT/s | 5600 MT/s |
| Bandwidth Class | PC5-44800 | PC5-51200 | PC5-44800 | PC5-44800 |
| CAS Latency | CL46 | CL40/CL52 (varies by listing: ServerSupply CL40, NEMIX CL52) | [DATA_NEEDED] | [DATA_NEEDED] |
| Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Rank / Organization | 2Rx4 (Dual Rank x4) | 2Rx4 | 128GB DDR5 RDIMM (per RamQuote) | 2Rx4 (identical Samsung module) |
| ECC | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) | Yes (Registered ECC) |
| OEM Cross-Reference | Samsung native MPN | Samsung native MPN | = Supermicro MEM-DR512L-SL01-ER56 | = Samsung M321RAJA0MB0-CWM |
Key Differentiators
- Optimized speed grade for first-generation DDR5 server platforms (vs M321RAJA0MB2-CCP)
- Maximum verified capacity per slot (vs M321RAJA0MB0-CWM)
- Multi-vendor second sourcing without requalification (vs MEM-DR512L-SL01-ER56)
Design Notes
Always populate DIMM channels symmetrically and follow the server vendor's memory population rules. Mixing the 5600 MT/s M321RAJA0MB2-CWM with DDR5-6400 modules (such as the M321RAJA0MB2-CCP) is electrically safe but forces the entire channel down to 5600 MT/s, wasting the faster module's budget. Never mix DDR4 and DDR5 - they are keyed differently and physically incompatible. Verify the platform QVL (qualified vendor list) before deploying third-party equivalents like NEMIX RAM modules in production fleets.
DDR5 RDIMMs move voltage regulation on-module via a PMIC, so module-level heat is slightly higher than DDR4 at the DRAM, while the server board's 1.1V distribution losses drop. In dense 2U/1U chassis with front-to-back airflow, install DIMMs starting from the slot nearest the CPU heatsink exhaust per vendor population order, and enable the BMC's DIMM thermal throttling (memory bandwidth caps at high temperature) to prevent thermal-induced shutdowns in 100%-loaded virtualization or AI hosts.
For procurement continuity, standardize on one physical module per server generation: RamQuote confirms OEM part numbers are branding, not different hardware - e.g., Supermicro MEM-DR512L-SL01-ER56 is the identical Samsung module. This lets you secondary-source the same silicon across Samsung native, Supermicro OEM, and third-party JEDEC-compliant channels without requalification, cutting lead-time exposure from months to days during DRAM allocation cycles.
Compliance Information
Verified data confirms 100% JEDEC DDR5 RDIMM compliance (CoreWave Labs). RoHS/REACH status for this specific MPN not stated in provided sources.
