M321R8GA0EB2-CWM - 64GB DDR5-5600 ECC RDIMM | Samsung
MPN: M321R8GA0EB2-CWM ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $599 | $599.00 |
| 10 | $599 | $5,990.00 |
| 100 | $599 | $59,900.00 |
| 500 | $599 | $299,500.00 |
| 1,000 | $599 | $599,000.00 |
Drop-in alternatives for M321R8GA0EB2-CWM — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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M321R8GA0EB0-CWM
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View Datasheet →M321R8GA0PB0-CWM
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M321R8GA0EB2-CCP
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View Datasheet →M321R8GA0EB2-CWM Maximum Ratings & Electrical Characteristics
| Memory Capacity | 64 GB (1 x 64 GB) |
| Memory Type | DDR5 SDRAM |
| Module Type | 288-pin ECC Registered DIMM (RDIMM) |
| Data Rate | 5600 MT/s |
| Clock Frequency | 2800 MHz |
| PC Bandwidth Class | PC5-44800 |
| CAS Latency | CL46 |
| Operating Voltage | 1.1 V |
| Rank x Organization | 2Rx4 (dual-rank, x4) |
| DRAM Composition | (4G x 4) x 40 |
| DRAM Die | Samsung D-die |
| ECC | ECC Registered (on-die ECC + registered interface) |
| Pins | 288 |
| Form Factor | DIMM (server/workstation) |
| Target Platforms | Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, Supermicro servers |
| JEDEC Compliance | 100% JEDEC compliant |
M321R8GA0EB2-CWM standard Pin Configuration Guide
Complete pinout information for M321R8GA0EB2-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 M321R8GA0EB2-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
M321R8GA0EB2-CWM is suitable for 6 applications: Enterprise Rack Servers, Virtualization Hosts, In-Memory Databases, AI Inference Servers, Workstations, Memory Upgrades and Fleet Refresh.
Enterprise Rack Servers
The M321R8GA0EB2-CWM is purpose-built for enterprise rack servers such as Dell PowerEdge, HPE ProLiant, and Lenovo ThinkSystem platforms. Its 5600 MT/s data rate and dual-rank x4 organization maximize per-channel bandwidth while the registered interface keeps the memory controller load low enough to populate up to two DIMMs per channel at rated speed. The 1.1V operation reduces module power roughly in line with the DDR5 standard, lowering datacenter cooling overhead compared to DDR4 RDIMMs. On-die ECC plus registered operation delivers the reliability enterprise workloads demand, and 100% JEDEC compliance ensures fitment across qualified vendor lists.
Recommended
Virtualization Hosts
Hypervisor hosts running many VMs benefit directly from the M321R8GA0EB2-CWM's 64GB density and dual-rank topology, which improves memory interleaving granularity across channels. At 5600 MT/s and PC5-44800 bandwidth class, the module sustains the random access patterns typical of consolidated virtual machines, while registered ECC operation guards against silent data corruption over long uptimes. Populating all channels with identical CWM modules lets platforms such as AMD EPYC and Intel Xeon Scalable/6 systems run at the validated 5600 MT/s speed with 1.1V efficiency, maximizing VM density per rack unit without overclocking risk.
Recommended
In-Memory Databases
In-memory databases such as SAP HANA, Redis, and in-memory analytics engines are capacity- and bandwidth-bound. The 64GB per-module density of the M321R8GA0EB2-CWM enables multi-terabyte memory footprints when populated across 24-32 DIMM slots, while its 5600 MT/s data rate keeps sequential and random bandwidth high enough for column-store scans. The x4 device organization with registered ECC provides the error containment that transactional systems require. Because the module runs at 1.1V, large populations avoid excessive thermal load inside dense 1U/2U chassis, sustaining boost clock behavior of the CPUs that feed the database.
Recommended
AI Inference Servers
AI inference appliances pair GPU/accelerator memory with large host-side DDR5 pools used for model weights staging, batching, and pre/post-processing. The M321R8GA0EB2-CWM provides 64GB per module at 5600 MT/s, letting a dual-socket server host 3-4TB of registered memory for large-model inference pipelines. Dual-rank x4 organization improves effective bandwidth for streaming weight loads, and the registered ECC interface maintains data integrity during sustained bulk transfers between host memory and accelerators over PCIe/NVLink. Its JEDEC-standard 288-pin RDIMM form fits standard AI server platforms from Supermicro, Dell, and HPE without custom qualification.
Recommended
Workstations
High-end workstation platforms that accept registered DDR5 memory - such as workstation-class Threadripper Pro and Xeon W systems - can use the M321R8GA0EB2-CWM to reach 256GB-1TB capacities for CAD, simulation, and content-creation workloads. The 64GB density reduces the number of modules needed versus 32GB parts, leaving slots free for later expansion, while 5600 MT/s dual-rank operation delivers responsive bandwidth for large assembly models and photorealistic rendering scenes. Registered ECC operation also protects against crashes during multi-hour renders, and the 1.1V standard voltage keeps acoustics and thermals workstation-friendly.
Recommended
Memory Upgrades and Fleet Refresh
For IT departments refreshing DDR4-era fleets to DDR5 platforms, the M321R8GA0EB2-CWM is a standard-capacity building block: 64GB modules in matched sets hit common sweet-spot configurations (256GB, 384GB, 512GB per server). Its 100% JEDEC compliance and broad Dell/HPE/Lenovo/Supermicro compatibility, documented by CoreWave Labs and ServerSupply, simplify procurement across mixed fleets from a single part number. Third-party compatible modules exist for budget refreshes, but genuine Samsung CWM parts allow mixed-population with existing Samsung RDIMMs without brand-matching concerns, protecting investments made during phased rollouts.
Recommended
Recommended Products Summary
Engineering reference data for M321R8GA0EB2-CWM — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M321R8GA0EB0-CWM | M321R8GA0PB0-CWM | M321R8GA0EB2-CCP |
|---|---|---|---|---|
| Package | 288-pin DIMM | 288-pin DIMM - same | 288-pin DIMM - same | 288-pin DIMM - same |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics |
| Capacity | 64 GB | 64 GB | 64 GB | 64 GB |
| Data Rate | 5600 MT/s | 5600 MT/s | 5600 MT/s | 6400 MT/s |
| CAS Latency | CL46 | CL46 | CL46 | CL52 |
| Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Rank x Width | 2Rx4 | 2Rx4 | 2Rx4 | 2Rx4 |
| ECC / Registration | ECC Registered (RDIMM) | ECC Registered (RDIMM) | ECC Registered (RDIMM) | ECC Registered (RDIMM) |
| Supply Channel | Standard Samsung / distribution | Supermicro OEM channel | Samsung distribution | Standard Samsung / distribution |
| Price (1pc) | $599.00 MSRP | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Balanced speed/latency at JEDEC-standard voltage (vs M321R8GA0EB2-CCP)
- Dual-rank x4 organization for capacity scaling (vs M321R8GA0EB0-CWM (1Rx8-capacity class equivalents))
- OEM channel flexibility within the same footprint (vs M321R8GA0EB0-CWM)
Design Notes
Verify platform speed support before purchase. Many server platforms rate 5600 MT/s only at one DIMM per channel; with 2DPC population the same M321R8GA0EB2-CWM may train down to 4800-5200 MT/s. Check the server vendor's memory configuration rules (e.g., HPE QuickSpecs, Dell memory population tables) for the speed at your intended population. Additionally, do not mix CWM (5600) and CCP (6400) modules expecting 6400 MT/s - the subsystem trains to the lowest common speed, wasting the faster module's premium.
Populate matched sets. DDR5 platforms achieve rated bandwidth only when all channels are populated symmetrically with identical rank count and module type. Mixing 2Rx4 modules like this one with 1Rx8 modules of the same capacity changes training results and interleaving behavior. For fleet deployments, order all modules of a single server from the same MPN and, ideally, the same manufacturing lot (PB0/EB0/EB2 suffixes indicate die/configuration variants) to minimize training edge cases documented in platform release notes.
At 1.1V and 5600 MT/s, module power is on the order of a few watts per DIMM under load (estimate based on typical DDR5 RDIMM operating power; exact figure is not published in the retrieved data). In dense 1U servers with 24+ DIMM slots, ensure chassis airflow covers the DIMM bank; most DDR5 RDIMMs do not include heatsinks by default. If the platform offers on-DIMM temperature sensors, enable BIOS thermal throttling thresholds so sustained AI/database workloads do not drive modules above JEDEC temperature limits.
Compliance Information
Verified web data states 100% JEDEC compliance for the module interface. RoHS/REACH status not stated in retrieved data; Samsung server memory modules are typically RoHS compliant but this must be confirmed from the official Samsung datasheet.
