M321R8GA0EB2-CWM - 64GB DDR5-5600 ECC RDIMM | Samsung
部品番号: M321R8GA0EB2-CWM ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4846.1538 | $4,846.15 |
| 10 | $3500 | $35,000.00 |
| 100 | $3096.1538 | $309,615.38 |
| 500 | $2961.5385 | $1,480,769.25 |
| 1,000 | $2826.9231 | $2,826,923.10 |
M321R8GA0EB2-CWM 概要
Registered (buffered) DIMMs are a class of server memory modules in which address, command, and control signals pass through a register chip before reaching the DRAM devices. This buffering reduces the electrical load on the memory controller, allowing servers and workstations to populate more DIMM slots per channel than is possible with unbuffered (UDIMM) memory. RDIMMs sit within the memory module hierarchy: DDR5 SDRAM device -> registered DIMM -> server memory -> enterprise datacenter memory subsystem. On-die ECC plus registered operation makes them mandatory in most multi-socket x86 server platforms.
Key features of the M321R8GA0EB2-CWM include 5600 MT/s data rate (2800 MHz clock, PC5-44800 bandwidth class), CAS latency of CL46 at the rated speed, dual-rank x4 organization that improves server memory capacity scaling, and 1.1V operation that lowers power draw versus DDR4 RDIMMs running at 1.2V. The DDR5 architecture also moves the power management IC (PMIC) onto the module and introduces two independent 32-bit subchannels per module, improving memory bandwidth efficiency for multi-core CPUs.
Technically, the module uses Samsung D-die 4G x 4 DDR5 DRAM components, 40 of which compose the 64GB (8G x 72 including ECC bits) registered module. The x4 device width combined with registered operation supports strong RAS (reliability, availability, serviceability) characteristics demanded in virtualization and database environments. On-die ECC detects and corrects single-bit errors internal to each DRAM die, while the registered interface maintains signal integrity at high slot counts.
Typical applications include Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, and Supermicro server platforms, as well as virtualization hosts, in-memory databases, and AI inference servers requiring high-capacity registered memory. Multiple identical modules should be installed in matched sets for optimal multi-channel bandwidth.
When designing or upgrading, confirm platform BIOS support for DDR5-5600 RDIMMs, as many platforms default to lower speeds such as 4800 MT/s or 5200 MT/s depending on populated DIMMs per channel. Mixing module speeds causes all modules to run at the slowest common speed.
This page synthesizes verified distributor specifications, drop-in alternatives, pricing context, and practical deployment notes not consolidated in the manufacturer datasheet.
ドロップイン代替品: M321R8GA0EB2-CWM — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: M321R8GA0EB2-CWM （同一形状・フットプリント） — 相違点: CAS Latency, DRAM Composition, ECC, Form Factor, Module Type.
クイック比較ツール — 並列比較する代替部品を選択:
M321R8GA0EB0-CWM
✓ 在庫あり
$2460.9375 / 個
データシートを見る →M321R8GA0EB2-CCP
✓ 在庫あり
価格はお問い合わせください
データシートを見る →M321R8GA0PB0-CWM
📋 参考代替品（カタログ未掲載）
M321R8GA0EB2-CWM 最大定格＆電気的特性
| Memory Capacity | 64 GB (1 x 64 GB) |
| メモリタイプ | DDR5 SDRAM |
| Module Type | 288-pin ECC Registered DIMM (RDIMM) |
| データレート | 5600 MT/s |
| Clock Frequency | 2800 MHz |
| PC Bandwidth Class | PC5-44800 |
| CASレイテンシ | 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 ピン配置ガイド
M321R8GA0EB2-CWM (standard パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: M321R8GA0EB2-CWM.
詳細は データシート をご参照ください。
主な用途
M321R8GA0EB2-CWM の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: M321R8GA0EB2-CWM — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- 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)
設計ノート
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.
コンプライアンス情報
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.
