M321R2GA3PB0-CWM - 16GB DDR5-5600 ECC RDIMM | Samsung
N.º de pieza: M321R2GA3PB0-CWM ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $45.9 | $45,90 |
| 10 | $43.6 | $436,00 |
| 100 | $41.2 | $4.120,00 |
| 500 | $39.1 | $19.550,00 |
| 1.000 | $37.5 | $37.500,00 |
M321R2GA3PB0-CWM Descripción general
A Registered DIMM (RDIMM) is a server-class memory module in which address, command, and control signals pass through a register chip before reaching the DRAM devices. This buffering reduces electrical loading on the memory controller, allowing servers and workstations to support higher memory population density and better signal integrity than unbuffered UDIMMs. RDIMMs sit within the memory-module hierarchy: DRAM component -> DIMM module -> registered ECC module -> server memory subsystem.
Key features include a 5600 Mbps (PC5-44800) transfer rate, ECC Registered (RDIMM) operation for data integrity, single-rank x8 organization that minimizes controller load and improves power efficiency, and JEDEC-standard DDR5 operation at 1.1 V. The ECC function corrects single-bit errors, which is essential for always-on enterprise workloads where uncorrected memory errors would cause crashes or data corruption.
Technically, the module uses DDR5's on-die ECC architecture at the DRAM level combined with side-band ECC at the module level, higher-burst-length (BL16) DDR5 protocol, and lower operating voltage than DDR4 RDIMMs (1.1 V vs 1.2 V), reducing per-bit energy consumption. Samsung classifies the part as in mass production.
Typical applications include entry-level virtualization hosts, edge-compute appliances, and small-scale enterprise servers such as Dell PowerEdge R660-class platforms, where registered DDR5 DIMMs are mandatory for the CPU memory controller.
Design consideration: always mix matched speeds and ranks per channel and verify the platform's qualified vendor list (QVL); RDIMMs are not interchangeable with UDIMMs or LRDIMMs on the same board.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para M321R2GA3PB0-CWM — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con M321R2GA3PB0-CWM (mismo factor de forma y huella) — difiere en Module Type, Form Factor, ECC, Capacity, Compatible Platforms.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
M321R2GA3PB0-CWMXJ
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
M321R2GA3EB0-CWM
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$72 / unidad
Ver hoja de datos →M321R2GA3EB2-CCP
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$74 / unidad
Ver hoja de datos →M321R3GA3PB0-CWM
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →M329R4GA0PB0-CWM
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
M324R4GA3BB0-CQK
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
M321R2GA3PB0-CWM-ATC
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
M321R2GA3PB0-CWM Valores máximos y características eléctricas
| Tipo de memoria | DDR5 SDRAM |
| Module Type | 288-pin RDIMM (ECC Registered) |
| Density | 16 GB (2G x 72) |
| Speed | 5600 Mbps (PC5-44800) |
| Operating Voltage | 1.1 V |
| Rank x Organization | 1R x 8 |
| Component Composition | (2G x 8) x 10 FBGA DRAM |
| Número de pines | 288 |
| ECC | Registered with ECC |
| Product Status | Mass Production |
| Form Factor | EC8 RDIMM |
| Compatible Platforms | Servers and workstations with DDR5 RDIMM support (e.g. Dell PowerEdge R660) |
Guía de configuración de pines de M321R2GA3PB0-CWM standard
Configuración de pines para M321R2GA3PB0-CWM (encapsulado standard). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para M321R2GA3PB0-CWM.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
M321R2GA3PB0-CWM es adecuado para 6 aplicacións: Entry-Level Virtualization Servers, Edge Compute Appliances, Small-Scale Enterprise Servers, Workstation Memory Upgrades, Memory Shortage Mitigation, Cloud and Hosting Infrastructure.
Entry-Level Virtualization Servers
The M321R2GA3PB0-CWM fits entry-level virtualization hosts because its 16 GB density and DDR5-5600 bandwidth balance cost and performance for small VM counts. The registered ECC architecture protects against single-bit memory errors that would otherwise crash hypervisors or corrupt guest images, while the single-rank 1Rx8 organization reduces memory-controller loading so more DIMMs per channel can run at full 5600 MT/s. Installed between the CPU's integrated memory controller and the OS, the module delivers PC5-44800 bandwidth per channel; the trade-off versus 32 GB dual-rank modules is lower capacity per slot, so plan slot population accordingly. Multiple modules should be installed symmetrically across channels to maximize aggregate bandwidth.
Recomendado
Edge Compute Appliances
Edge-compute nodes benefit from the M321R2GA3PB0-CWM's low 1.1 V operating voltage, which reduces per-bit energy consumption and heat in fanless or constrained-cooling enclosures. Its ECC Registered DDR5 design maintains data integrity for continuous-duty inference and stream-processing workloads where uncorrected errors are unacceptable. The 16 GB capacity suits containerized edge services and local caching tiers, and the DDR5-5600 rate provides headroom for burst workloads. Because the module is JEDEC-standard 288-pin RDIMM, it drops into any x86 or Arm server SoC platform supporting registered DDR5, enabling long-life serviceability and second-source availability from NEMIX RAM and A-Tech equivalents.
Recomendado
Small-Scale Enterprise Servers
For small business and departmental servers such as Dell PowerEdge R660 and R660xs class machines, the M321R2GA3PB0-CWM provides validated 16 GB DDR5-5600 registered memory at an economical price point. The same-family CWMXJ variant carries a Dell cross-reference (AC830716), simplifying qualification. The ECC function corrects single-bit errors in always-on file, print, and application hosting, and the 1Rx8 organization supports full-speed 5600 MT/s operation in one-DIMM-per-channel configurations common in entry servers. Mixed deployment with 32 GB modules (M329R4GA0PB0-CWM) allows staged capacity growth while keeping all channels populated for balanced bandwidth.
Recomendado
Workstation Memory Upgrades
Professional workstations built on Xeon W or Threadripper PRO platforms accept the M321R2GA3PB0-CWM as a cost-effective 16 GB DDR5-5600 RDIMM. Content-creation and CAD applications benefit from the module's 44800 MB/s bandwidth for large asset handling, while ECC protects long render and simulation jobs from silent memory errors that would waste hours of compute. The 288-pin registered form factor is required on these platforms, distinguishing it from consumer UDIMMs. When populating eight or more DIMM slots, single-rank modules like this one often sustain full memory speed where dual-rank modules would force downclocking, an important trade-off in certified ISV workstation configurations.
Recomendado
Memory Shortage Mitigation
When Samsung supply tightens, procurement teams can substitute certified-compatible third-party RDIMMs matching the M321R2GA3PB0-CWM's 16 GB DDR5-5600 1Rx8 1.1 V CL46 288-pin specification. NEMIX RAM and A-Tech (M321R2GA3PB0-CWM-ATC) modules are compatibility-tested drop-in replacements engineered to the same JEDEC registered DDR5 standard, so they can be deployed interchangeably on platforms that accept third-party memory. XAIPART recommends avoiding brand mixing within a single memory channel where possible, validating BIOS-level memory training after substitution, and confirming the server qualified vendor list to preserve warranty and support agreements on enterprise hardware.
Recomendado
Cloud and Hosting Infrastructure
Colocation and hosting providers deploying high-slot-count 1U/2U servers use the M321R2GA3PB0-CWM to build balanced 128-256 GB configurations from sixteen modules at minimum cost per gigabyte. The 5600 MT/s rate maximizes per-core memory bandwidth for multi-tenant workloads, and registered ECC operation is mandatory on the EPYC/Xeon Scalable platforms these systems use. Single-rank modules improve signal integrity at full population, permitting 1DPC or 2DPC topologies without speed derating. Bulk purchasing at the 500-1000 unit tiers (approximately $39.10-$37.50 per module as of 2026-09-04) materially lowers fleet capital cost versus retail channels.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para M321R2GA3PB0-CWM — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | M321R2GA3PB0-CWMXJ | M321R3GA3PB0-CWM | M329R4GA0PB0-CWM | M324R4GA3BB0-CQK | M321R2GA3PB0-CWM-ATC |
|---|---|---|---|---|---|---|
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics (A-Tech replacement) |
| Memory Size | 16 GB | 16 GB | 24 GB | 32 GB | 32 GB | 16 GB |
| Transfer Rate | 5600 Mbps (PC5-44800) | 5600 Mbps | 5600 Mbps | 5600 Mbps | 4800 Mbps | 5600 Mbps |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC / Registration | ECC Registered (RDIMM) | ECC Registered | ECC Registered | ECC Registered | ECC Registered | ECC Registered |
| Product Status | Mass Production | Mass Production | Mass Production | Mass Production | Mass Production | Active (aftermarket) |
Diferenciadores clave
- Highest speed grade in the compared family (frente a M324R4GA3BB0-CQK)
- Single-rank efficiency at full speed (frente a M329R4GA0PB0-CWM)
- OEM cross-reference availability (frente a M321R3GA3PB0-CWM)
Notas de diseño
Never mix RDIMMs with UDIMMs or LRDIMMs on the same platform - registered modules are only recognized by server-class memory controllers. Do not assume the 288-pin DDR5 connector is backward compatible with DDR4; the key notch position differs and DDR5 signaling (1.1 V, BL16, on-die ECC, PMIC on module) is entirely new. When populating channels, install modules symmetrically (per-channel identical capacity/rank) to avoid BIOS training failures or automatic speed derating from 5600 MT/s.
Each DDR5 RDIMM integrates an on-module PMIC that converts the 1.1 V rail to the DRAM core supply, shifting point-of-load regulation onto the module itself. Verify the server platform's per-DIMM power budget and PMIC firmware (some platforms restrict PMIC programmability for security). A fully populated 8-channel EPYC/Xeon system with 16 GB single-rank modules draws meaningfully less than dual-rank equivalents, improving thermal headroom in 1U chassis with limited airflow.
DDR5 modules operate within JEDEC-specified thermal envelopes; sustained operation above the ambient design limit triggers refresh-rate doubling (2x refresh), which reduces effective bandwidth. In dense 2U or blade deployments, verify inlet air temperature to DIMM slots stays within platform specification, and prefer single-rank modules like this 1Rx8 part in slot-heavy configurations because their lower per-module dissipation eases airflow design and avoids throttling under sustained virtualization loads.
Información de cumplimiento
Compliance declarations not present in retrieved data; obtain Samsung's official RoHS/REACH certificate via Samsung Semiconductor environmental documentation before regulated deployment.
