M321R4GA0EB2-CWM - 32GB DDR5-5600 ECC RDIMM | Samsung
MPN: M321R4GA0EB2-CWM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $89 | $89.00 |
| 10 | $84.5 | $845.00 |
| 100 | $79 | $7,900.00 |
| 500 | $74 | $37,000.00 |
| 1,000 | $69 | $69,000.00 |
Drop-in alternatives for M321R4GA0EB2-CWM — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
M321R4GA0EB2-CCP
✅ Drop-In✓ In Stock
$255 / Unit
View Datasheet →M321R4GA0EB2-CCPKC
✅ Drop-In📋 Reference alternative (not in catalog)
M321R4GA3EB0-CWM
✅ Drop-In✓ In Stock
$1489 / Unit
View Datasheet →M321R4GA3PB0-CWM
✅ Drop-In✓ In Stock
$70.5 / Unit
View Datasheet →MR51200-314K1-M321R4GA0EB2-CCP-V27
✅ Drop-In📋 Reference alternative (not in catalog)
M321R4GA0EB2-CWM Maximum Ratings & Electrical Characteristics
| Capacity | 32 GB |
| Memory Type | DDR5 SDRAM |
| Module Type | 288-pin ECC Registered DIMM (RDIMM) |
| Data Rate | 5600 MT/s |
| Bandwidth Class | PC5-44800 |
| CAS Latency | CL46 |
| Operating Voltage | 1.1 V |
| Organization | 4G x 72 (1Rx4) |
| Ranks | 1 (single rank) |
| DRAM Configuration | 20 FBGA x4 components |
| Error Correction | ECC (on-module, registered) |
| Pins | 288 |
| Application | Server / Enterprise / Edge Compute |
| JEDEC Compliance | DDR5 RDIMM (PC5-44800R class) |
| Manufacturer | Samsung Electronics |
M321R4GA0EB2-CWM standard Pin Configuration Guide
Complete pinout information for M321R4GA0EB2-CWM (standard package) with 288 pins. 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 M321R4GA0EB2-CWM.
Refer to the datasheet for full pin configuration.
Estimated pin count: 288 pins (digital package)
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
M321R4GA0EB2-CWM is suitable for 6 applications: General-Purpose Rack Servers, Edge Compute Appliances, Virtualization and VM-Density Hosts, Enterprise Data Center Memory Refresh, Storage Controllers and File Servers, Networking and Security Appliances.
General-Purpose Rack Servers
The M321R4GA0EB2-CWM fits 1U/2U general-purpose rack servers from Dell PowerEdge, Lenovo ThinkSystem, HPE ProLiant, and Supermicro that accept DDR5-5600 RDIMMs. Its 32GB single-rank capacity is the sweet spot for populating all 8-16 channels without hitting cost or thermal limits, and the 5600 MT/s PC5-44800 data rate feeds modern Xeon Scalable and EPYC memory controllers at their mid-tier validated speed. The 1Rx4 organization reduces channel loading so two DIMMs per channel can run at full validated speed. Register buffering and on-module ECC sustain uptime-critical workloads, while the 1.1V DDR5 voltage cuts module power roughly 30% versus DDR4 at equal capacity, easing airflow budgets in dense chassis.
Recommended
Edge Compute Appliances
Edge compute nodes processing local analytics and AI inference benefit directly from the M321R4GA0EB2-CWM's profile: 32GB per module delivers ample working set for containerized services and local datasets without the cost of higher-density LRDIMMs, and the single-rank 1Rx4 configuration keeps per-channel load low, which matters in edge servers with constrained memory controllers. Distributor data (CoreWaveLabs) explicitly designates this part for edge compute. The DDR5 1.1V operation reduces heat in passively cooled or fan-limited edge enclosures, and on-module ECC protects long-unattended deployments from silent DRAM soft errors that would otherwise corrupt data between service intervals.
Recommended
Virtualization and VM-Density Hosts
Hypervisor hosts balance per-DIMM cost against total memory per socket, and the M321R4GA0EB2-CWM's 32GB DDR5-5600 capacity allows 256GB-512GB per socket using only 8-16 modules, leaving DIMM slots free for later expansion. The 5600 MT/s PC5-44800 bandwidth keeps VM memory pressure manageable for low-to-medium VM density, which is exactly the target use CoreWaveLabs lists for this part. ECC Registered architecture is mandatory for production hypervisors because a single uncorrected DRAM error can crash the entire host; the CWM's registered buffering and x4 ECC topology handle both soft errors and multi-bit detection across the 4Gx72 organization.
Recommended
Enterprise Data Center Memory Refresh
For data centers migrating from DDR4 to DDR5 platforms, the M321R4GA0EB2-CWM represents the standard enterprise memory building block: 32GB, 288-pin, JEDEC-compliant DDR5-5600 RDIMM qualified across Dell PowerEdge R660, MX760c, and comparable platforms (per ramquote platform data for the CWM speed family). The 1.1V operation and DDR5 on-module PMIC improve power efficiency at rack scale, directly lowering total facility power per terabyte versus DDR4. Single-rank 1Rx4 population maximizes validated speed headroom and simplifies mixing with future capacity upgrades, while Samsung die-level supply consistency supports large-volume, single-part-number rollouts for fleet standardization.
Recommended
Storage Controllers and File Servers
Storage arrays and file servers use host memory as read/write cache, where capacity per DIMM and error correction dominate the selection. The M321R4GA0EB2-CWM's 32GB per module lets a dual-socket controller reach 512GB-1TB with modest DIMM counts, and the x4 ECC Registered design detects and corrects single-bit errors, protecting cached filesystem metadata and journal state. The 5600 MT/s PC5-44800 bandwidth sustains cache refill bursts during RAID rebuilds, while the 1.1V module power reduces controller chassis heat over 24/7 operation. Single-rank organization also shortens effective access latency for metadata-heavy workloads.
Recommended
Networking and Security Appliances
High-throughput network appliances - next-generation firewalls, SD-WAN concentrators, and load balancers - hold large flow tables and DPI state in host memory, making 32GB-per-DIMM DDR5 RDIMMs like the M321R4GA0EB2-CWM a natural fit. The 5600 MT/s data rate with PC5-44800 class bandwidth keeps packet-inspection working sets resident in DRAM rather than spilling to slower tiers, and registered ECC operation guards the session state database against soft errors during long uptime cycles. The 1Rx4 organization minimizes channel load in compact appliance boards that run two DIMMs per channel, and 1.1V DDR5 power suits constrained 1RU thermals common in network appliance form factors.
Recommended
Recommended Products Summary
Engineering reference data for M321R4GA0EB2-CWM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M321R4GA0EB2-CCP | M321R4GA0EB2-CCPKC | M321R4GA3EB0-CWM | M321R4GA3PB0-CWM | MR51200-314K1-M321R4GA0EB2-CCP-V27 |
|---|---|---|---|---|---|---|
| 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 (NEMIX RAM-compatible module) |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | 5600 MT/s (PC5-44800) | 6400 MT/s (PC5-51200) | 6400 MT/s (PC5-51200) | 5600 MT/s (PC5-44800) | 5600 MT/s (PC5-44800) | 6400 MT/s (PC5-51200) |
| CAS Latency | CL46 | CL52 (per platform listings) | CL52 | CL46 | CL46 | CL52 |
| Ranks / Organization | 1Rx4 (4Gx72) | 1Rx4 | 1Rx4 | 2Rx8 | 2Rx8 | 1Rx4 |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC / Registration | ECC Registered | ECC Registered | ECC Registered | ECC Registered | ECC Registered | ECC Registered |
| Unit Price (qty 1, as of 2026-09-04) | USD 89.00 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Single-rank 1Rx4 organization minimizes channel load (vs M321R4GA3EB0-CWM)
- Lowest-latency speed bin in the 32GB family (vs M321R4GA0EB2-CCP)
- OEM Samsung die with full QVL coverage (vs MR51200-314K1-M321R4GA0EB2-CCP-V27)
Design Notes
Never mix speed bins (CWM 5600 vs CCP 6400) or rank organizations (1Rx4 vs 2Rx8) within one channel. BIOS trains the channel to the lowest common SPD profile, so all modules drop to 5600 MT/s, and mixed-rank channels may fall off the platform's validated population table entirely. Populate identical modules per channel and verify the final configuration against the server vendor's qualified vendor list (QVL) and memory population guide before deployment.
The module operates at 1.1V per JEDEC DDR5 with on-module PMIC, so a 16-DIMM server at roughly 5W per module draws about 80W on the memory rails. Estimated: memory power scales with utilization, so budget airflow per DIMM slot, and ensure the platform BIOS enables DDR5 power-down and refresh management features to reclaim power at idle. Do not attempt to adjust module voltage - RDIMM PMIC settings are SPD-locked for server reliability.
Single-rank 1Rx4 modules like this CWM part load the channel less than 2Rx8 builds, which usually allows two DIMMs per channel at full validated speed. However, some workloads (bandwidth-bound HPC, large in-memory caches) benefit from 2Rx8 rank interleaving despite lower per-channel speed ceilings. Run your actual workload benchmark on both configurations if the QVL lists both; raw MT/s ratings do not directly predict application bandwidth.
Compliance Information
ICAllIn listing shows RoHS Status as unspecified for this MPN. Server memory modules from Samsung are typically RoHS compliant, but this must be confirmed from the manufacturer compliance portal before use - values here were not found in verified data.
