M321R8GA0EB0-CWM - 64GB DDR5-5600 ECC RDIMM | Samsung
MPN： M321R8GA0EB0-CWM ✓ 啟用中| 數量 | 單價 | 小計 |
|---|---|---|
| 1 | $4218.75 | $4,218.75 |
| 10 | $3046.875 | $30,468.75 |
| 100 | $2695.3125 | $269,531.25 |
| 500 | $2578.125 | $1,289,062.50 |
| 1,000 | $2460.9375 | $2,460,937.50 |
M321R8GA0EB0-CWM 概覽
An RDIMM (Registered DIMM) is a memory module that buffers the command and address lines with a register chip, reducing electrical loading on the memory controller so servers can support higher module counts per channel. Registered ECC memory sits at the top of the server memory hierarchy: it differs from UDIMMs (unbuffered, desktop/workstation) and SODIMMs (small outline, laptops) and is required by virtually all Intel Xeon Scalable and AMD EPYC DDR5 server platforms.
Key features include DDR5-5600 data rate, on-DIMM ECC with on-die DRAM error correction, a 1.1V low-voltage supply that cuts memory-subsystem power versus DDR4's 1.2V, and dual-rank x4 organization that improves bandwidth and refresh efficiency. The PC5-44800 bandwidth class delivers roughly 44800 MB/s per module peak, a step increase over DDR4-3200 RDIMMs.
Architecturally, DDR5 splits each module's supply rails and doubles the number of independent channels per DIMM (two 32-bit sub-channels plus 8-bit ECC), which improves effective concurrency in multi-VM workloads. The registered interface plus the DDR5 on-module power management network stabilizes signal integrity at 5600 MT/s across two ranks.
Typical applications include virtualization hosts where memory capacity per slot drives VM consolidation ratios, database servers where 64GB modules allow larger buffer pools, and standard datacenter compute nodes from Dell, HPE, Supermicro and other OEMs. JEDEC-compliant design ensures broad platform interoperability.
Design consideration: populate memory channels symmetrically per the server OEM's population rules; mixing single-rank and dual-rank modules across channels can derate the achievable speed grade below 5600 MT/s on some platforms.
This page synthesizes distributor availability data, cross-reference information, and practical deployment notes not found in the manufacturer datasheet. Pricing is quote-based as of 2026-09-04.
直接替換替代品，適用於 M321R8GA0EB0-CWM — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： M321R8GA0EB0-CWM （相同外形與佔位） — 差異在於 Bandwidth Class, CAS Latency, Capacity, DRAM Composition, Form Factor.
快速比較工具 — 選擇替代零件進行並排比較：
M321R8GA0EB2-CWM
✗ 缺貨
$2826.9231 / 單位
查看資料表 →M321R6GA0PB0-CWM
聯絡詢價
查看資料表 →M321R4GA3EB0-CWM
聯絡詢價
查看資料表 →M321R4GA0EB0-CWM
聯絡詢價
查看資料表 →M321R2GA3EB0-CWM
聯絡詢價
查看資料表 →M321R8GA0EB0-CWM 最大額定值與電氣特性
| Capacity | 64 GB (1 x 64 GB) |
| 記憶體類型 | DDR5 SDRAM |
| Form Factor | 288-pin DIMM |
| Module Type | ECC Registered DIMM (RDIMM) |
| 資料速率 | 5600 MT/s (PC5-44800) |
| 組織 | 8Gx72 |
| Rank Configuration | 2Rx4 (Dual Rank, x4) |
| DRAM Composition | 40 x FBGA 4Gx4 DDR5 DRAM |
| Operating Voltage | 1.1 V |
| CAS 延遲 | CL46 |
| Error Correction | ECC (Registered) |
| Bandwidth Class | 44800 MB/s |
| Primary Applications | Server / Datacenter (Intel Xeon Scalable, AMD EPYC) |
| Standards Compliance | JEDEC DDR5 compliant |
| OEM Compatibility | Dell, HPE, Supermicro and other DDR5 server platforms |
| 安裝類型 | Slot-mounted server memory slot |
M321R8GA0EB0-CWM standard 腳位配置指南
M321R8GA0EB0-CWM（standard 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： M321R8GA0EB0-CWM.
請參閱 資料表 以查看完整腳位配置。
典型應用
M321R8GA0EB0-CWM 適用於 6 應用s: Virtualization Hosts / Multi-VM Consolidation, Database Servers, Enterprise Datacenter Standard Compute, In-Memory Analytics / HPC Data Nodes, OEM Server Manufacturing & Integration, Memory Capacity Upgrades / Server Refresh.
Virtualization Hosts / Multi-VM Consolidation
The M321R8GA0EB0-CWM's 64GB-per-slot capacity directly raises virtual machine consolidation ratios: a dual-socket platform populated with 16 of these modules provides 1TB of DDR5-5600 memory, enough to host hundreds of lightweight VMs or dozens of memory-heavy database VMs. Its 5600 MT/s rate and 2Rx4 dual-rank organization maximize per-channel bandwidth, which matters when many VMs contend for memory concurrently. Installed in standard DDR5 RDIMM slots on Intel Xeon Scalable and AMD EPYC boards, it requires no special configuration beyond symmetric population; the registered interface keeps signal integrity stable at full slot count, and on-module ECC protects long-running virtualization workloads from uncorrected memory errors.
推薦
Database Servers
Database engines such as MySQL, PostgreSQL, and SAP HANA scale their buffer pools with available RAM, and the M321R8GA0EB0-CWM's 64GB capacity lets a single node reach multi-terabyte memory footprints without exhausting DIMM slots. The 5600 MT/s (PC5-44800) bandwidth class reduces latency for random buffer-pool reads compared with DDR4-3200 RDIMMs, and the 8Gx72 ECC organization corrects single-bit errors that would otherwise corrupt cached pages over long uptimes. Populating all channels symmetrically with these dual-rank modules delivers maximum memory bandwidth for analytical scans and join-heavy queries; budget roughly 8-12W thermal per module in server cooling design.
推薦
Enterprise Datacenter Standard Compute
For standard datacenter compute nodes from Dell, HPE, and Supermicro, the M321R8GA0EB0-CWM is a JEDEC-compliant DDR5-5600 RDIMM validated against mainstream server memory population rules. Its 1.1V supply lowers memory-subsystem power versus DDR4's 1.2V, and DDR5's on-module power management network regulates VDD locally, easing platform power-delivery design at high slot counts. Distributors specifically list this MPN as compatible with Dell and HPE DDR5 platforms, simplifying procurement for mixed-fleet refreshes. Deploy it in pairs or quads per channel following the OEM population table to hold the full 5600 MT/s speed grade across dual-rank configurations.
推薦
In-Memory Analytics / HPC Data Nodes
In-memory analytics frameworks (Apache Spark, SAP HANA, in-memory caches) are bandwidth- and capacity-bound, and the M321R8GA0EB0-CWM addresses both: 64GB per module and a dual-rank 2Rx4 arrangement that keeps DRAM banks interleaved for sustained throughput at 5600 MT/s. An 8-channel EPYC node filled with these modules delivers several hundred GB/s of aggregate memory bandwidth. The x4 DRAM organization with registered ECC adds chipkill-class resilience options on supporting platforms, important for long-running scientific and analytics jobs. Estimated per-module power of 8-12W should be reflected in node-level thermal budgets at full population.
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OEM Server Manufacturing & Integration
System integrators building branded servers for Dell, HPE, and Supermicro ecosystems use the M321R8GA0EB0-CWM as an OEM Samsung module with a traceable part number, which simplifies warranty validation and bill-of-materials qualification. Because it is 100% JEDEC DDR5 compliant, the same module image qualifies across multiple motherboard vendors, reducing requalification cost when platforms change. The 40-die FBGA construction and registered ECC interface provide the reliability profile enterprise buyers expect. Integrators should verify BIOS/SPD compatibility per build and can substitute the EB2 revision where the EB0 build is unavailable without BOM re-approval in most programs.
推薦
Memory Capacity Upgrades / Server Refresh
When upgrading existing DDR5 servers, the M321R8GA0EB0-CWM slots directly into vacant DDR5 RDIMM sockets without firmware changes, doubling density where 32GB modules are already installed. It down-clocks automatically on platforms limited to DDR5-4800, so it is safe to deploy ahead of platform refresh while still gaining capacity immediately. Compatibility testing by third-party replacement vendors (NEMIX RAM, A-Tech) confirms the drop-in profile of this specification class across Dell and HPE DDR5 systems. Plan upgrades per the OEM population table: mixing single-rank and dual-rank modules across channels can derate speed, so fill channels with identical 2Rx4 modules where possible.
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推薦產品摘要
工程參考資料，適用於 M321R8GA0EB0-CWM — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | M321R8GA0EB2-CWM | M321R6GA0PB0-CWM | M321R4GA3EB0-CWM | M321R4GA0EB0-CWM |
|---|---|---|---|---|---|
| Package | 288-pin DIMM | 288-pin DIMM - same | 288-pin DIMM - same | 288-pin DIMM - same | 288-pin DIMM - same |
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics |
| Capacity | 64 GB | 64 GB | 64 GB | 32 GB | 32 GB |
| Data Rate | 5600 MT/s (PC5-44800) | 5600 MT/s | 5600 MT/s | 5600 MT/s | 5600 MT/s |
| Module Type | ECC Registered DIMM (RDIMM) | ECC RDIMM | ECC RDIMM | ECC RDIMM | ECC RDIMM |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Typical Deployment | 64GB-per-slot server builds | Identical-spec builds / EB0 substitute | 64GB alternative generation | 32GB density tier | 32GB density tier |
主要差異化特點
- Maximum 64GB density per slot in this family (對比M321R4GA3EB0-CWM)
- Full 5600 MT/s dual-rank x4 bandwidth configuration (對比M321R2GA3EB0-CWM)
- Dual sourcing within Samsung via EB0/EB2 revisions (對比M321R8GA0EB2-CWM)
設計說明
Do not mix RDIMMs with UDIMMs or LRDIMMs in the same system - DDR5 server platforms validate the module type at POST and will refuse to boot or derate unexpectedly. Also, do not assume 5600 MT/s is automatic: many platforms only sustain 5600 MT/s with one DIMM per channel (1DPC); populating two DIMMs per channel may train down to 4800 MT/s. Always consult the server OEM's memory population table before ordering quantities, and keep all modules in a channel identical in rank and organization for the best training result.
Estimated: a fully populated dual-socket server with 24 of these 64GB DDR5-5600 RDIMMs dissipates on the order of 200-300W across the memory subsystem alone (roughly 8-12W per dual-rank module under load). Ensure chassis airflow paths cover DIMM slots, and enable platform memory thermal throttling policies. DDR5's on-module PMIC regulates the 1.1V rail locally, so module-level hot spots concentrate near the PMIC; server vendors set thermal limits in BIOS that should not be overridden.
Estimated: compared with an equivalent DDR4-3200 RDIMM configuration at 1.2V, the 1.1V DDR5 M321R8GA0EB0-CWM reduces per-module supply voltage by about 8%, translating to meaningful platform-level savings at high slot counts (roughly 15-30W for a 16-module server). DDR5 also moves power conversion onto the module via a 12V input and on-DIMM PMIC, so verify that the server PSU and 12V distribution are within the OEM platform specification. Bulk capacitors on module 12V rails are handled by the platform design - no user configuration needed.
合規資訊
Module is stated as 100% JEDEC DDR5 compliant by distributor listings. Specific RoHS/REACH declarations were not present in the provided source data.
