The Samsung M321RAJA0MB0-CWM is a 128GB DDR5-5600 registered ECC DIMM in steady mass production, making it a dependable line item for resellers, system integrators and IT procurement teams building out server memory inventory. We supply this module in consistent single-part-number batches, which simplifies matched-set deployment across virtualization hosts, cloud nodes, AI training clusters, big data analytics platforms and HPC environments. Stock levels are confirmed at time of quotation, and we can support both single-drop bulk orders and recurring supply agreements.
For integrators planning multi-socket or high-core-count deployments, ordering modules from the same production batch helps keep channel population symmetric and preserves rated 5600 MT/s performance. Note that DDR5 RDIMMs are not backward compatible with DDR4 platforms — buyers should verify server generation and the OEM qualified memory list before placing volume orders. Our pre-sales team can assist with compatibility checks for common enterprise platforms.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M321RAJA0MB0-CWM |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 128GB |
| Speed | DDR5-5600 / PC5-44800R |
| Data Transfer Rate | 5600 MT/s (actual speed may depend on platform and populated configuration) |
| Rank Configuration | 2Rx4 (Dual Rank x4) |
| ECC Support | Yes (requires server platform with ECC-enabled DIMM slots) |
| Operating Voltage | 1.1V (lower than DDR4, helping reduce memory subsystem power draw) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (8G × 4) × 40 |
| CAS Latency | CL46 |
| Maximum Bandwidth | 44.8 GB/s per module |
| Application | Enterprise Servers, Cloud Computing, AI Training, Big Data Analytics, High-Performance Computing (HPC) |
| Operating Temperature | 0°C to 95°C |
| Operating Environment | 24/7 Enterprise-Class Operation |
| Product Status | Mass Production |
Supply & Compliance
- All shipments are certified to CE, FCC and RoHS requirements, with documentation available on request for customs and tender submissions.
- Warranty coverage and RMA handling are managed through our B2B channel: defective units are processed under a structured RMA workflow with replacement or credit depending on order terms.
- Batch consistency is guaranteed within a single purchase order; we label and track lot numbers so integrators can maintain matched-set integrity across phased rollouts.
- Standard lead times are confirmed with each quotation; urgent requirements can often be prioritized subject to warehouse allocation.
Good to know
- DDR5 RDIMMs cannot be mixed with DDR4 modules in the same system; verify your motherboard or server supports DDR5 registered DIMMs and consult the vendor’s qualified memory list for population rules per channel.
- Within the DDR5 RDIMM family, the dual-rank 2Rx4 configuration offers a good balance between per-module density and signal integrity, and 128GB modules let you reach high total capacities without filling every slot.
For current stock positions, tiered pricing and delivery schedules, please request a wholesale quote and our sales team will respond with a tailored offer for your project volume.
Wholesale & Procurement Notes
- MOQ negotiable depending on configuration and destination market.
- Tiered volume pricing available — request a quote for your target quantity.
- Typical lead time: 3–7 business days for in-stock items; larger lots confirmed per order.
- Packing options include anti-static bulk trays, retail-neutral boxes, and consolidated pallet shipping with tracking.
- RMA window: 30 days from receipt for DOA claims, with manufacturer warranty terms applying thereafter.
