HMCG84MEBRA174N - 32GB DDR5-4800 ECC RDIMM | SK hynix | Server Memory
部品番号: HMCG84MEBRA174N ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1912.5 | $1,912.50 |
| 10 | $1381.25 | $13,812.50 |
| 100 | $1221.875 | $122,187.50 |
| 500 | $1168.75 | $584,375.00 |
| 1,000 | $1115.625 | $1,115,625.00 |
HMCG84MEBRA174N 概要
Registered DIMM memory is a class of memory module that places a registering buffer between the DRAM devices and the memory controller. This buffering reduces the electrical load on the controller, allowing servers to populate more DIMM slots per channel than with unbuffered memory. In the hierarchy of memory technologies, the RDIMM sits between consumer UDIMMs and load-reduced DIMMs (LRDIMMs), and it is the standard choice for enterprise servers, workstations, and cloud compute hosts that require both capacity and reliability.
Key features of the HMCG84MEBRA174N include on-die ECC correction, which detects and corrects single-bit errors at the DRAM die level, side-band management for out-of-band health monitoring via the SMBus/I2C serial presence-detect interface, and the DDR5 architecture's dual 32-bit sub-channels per module that improve effective concurrency versus DDR4. The 1.1V operating voltage cuts module power draw roughly 20-30% versus equivalent DDR4-3200 RDIMMs, lowering data center thermal load.
The module uses DDR5 DRAM devices organized x4 and is available in single-rank (1Rx4) configurations per most distributor listings; some listings describe a dual-rank (2Rx4) variant, so rank should be confirmed with the supplier before mixing modules in the same channel. DDR5's on-module power management IC (PMIC) converts the 12V/5V server rail to the 1.1V DRAM rail locally, improving signal integrity and power delivery granularity.
Typical applications include general-purpose 2-socket servers, edge compute nodes, low-VM-density virtualization hosts, and cloud infrastructure memory pools where 32GB per DIMM balances cost and channel density. Intel Xeon Scalable (Sapphire Rapids/Emerald Rapids) and AMD EPYC (Genoa/Bergamo) platforms with DDR5 RDIMM support are the primary host environments.
When designing or upgrading, always populate DIMMs in pairs matched in speed, rank, and capacity, and verify platform qualified vendor list (QVL) support for DDR5-4800 registered modules. Mixing 1Rx4 and 2Rx4 modules on the same channel may reduce achievable speed.
This page synthesizes distributor stock and pricing data, drop-in SK hynix DDR5 RDIMM alternatives, and practical deployment notes not consolidated in any single manufacturer or distributor listing.
ドロップイン代替品: HMCG84MEBRA174N — 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: HMCG84MEBRA174N （同一形状・フットプリント） — 相違点: Form Factor, CAS Latency, Memory Type, Data Rate, ECC.
クイック比較ツール — 並列比較する代替部品を選択:
HMCG84MEBRA107N
✓ 在庫あり
$69.5 / 個
データシートを見る →HMCG84AGBRA191N
✓ 在庫あり
$103.2 / 個
データシートを見る →HMCG84MEBRA113N
📋 参考代替品（カタログ未掲載）
HMCG84MEBRA115N
📋 参考代替品（カタログ未掲載）
HMCG84MEBQA174N
📋 参考代替品（カタログ未掲載）
HMCG88MEBRA107N
📋 参考代替品（カタログ未掲載）
HMCG84MEBRA174N 最大定格＆電気的特性
| メモリタイプ | DDR5 SDRAM |
| Module Type | 288-Pin ECC Registered DIMM (RDIMM) |
| Capacity | 32 GB |
| データレート | 4800 Mbps (MT/s) |
| PC Speed Grade | PC5-38400 |
| CASレイテンシ | CL40 |
| Operating Voltage | 1.1 V |
| メモリ構成 | x4 |
| Rank | 1Rx4 (some distributor listings state 2Rx4 - confirm with supplier) |
| ECC | Yes (Registered with ECC, on-die ECC) |
| Peak Bandwidth | 38.4 GB/s per module |
| Form Factor | Very Low Profile (VLP) RDIMM per distributor listing |
| ピン数 | 288 |
| Packaging | Bulk |
| Compliance | JEDEC-standard, RoHS compliant |
| Application Domain | Server / Data Center Memory |
HMCG84MEBRA174N standard ピン配置ガイド
HMCG84MEBRA174N (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: HMCG84MEBRA174N.
詳細は データシート をご参照ください。
主な用途
HMCG84MEBRA174N の用途: 6 件s: General-Purpose 2-Socket Servers, Edge Compute Nodes, Low-VM-Density Virtualization Hosts, Cloud Infrastructure Memory Pools, Memory Upgrades and Maintenance (Aftermarket), Workstations and High-Performance Client Platforms.
General-Purpose 2-Socket Servers
The HMCG84MEBRA174N is a natural fit for mainstream dual-socket servers built on Intel Xeon Scalable or AMD EPYC platforms, where 32GB per DIMM is the most cost-efficient capacity point. Its DDR5-4800 interface provides 38.4 GB/s per module, and the registered interface allows 8-16 DIMMs per server without overloading the memory controller. Deployed in paired channels, 16 modules yield 512GB per node at CL40 latency and 1.1V, cutting memory subsystem power roughly 20-30% versus DDR4-3200 RDIMMs of equal capacity. On-die ECC plus platform ECC guards long-running virtualization workloads against silent data corruption.
おすすめ
Edge Compute Nodes
Edge compute appliances benefit from the HMCG84MEBRA174N's balance of capacity, bandwidth, and thermals. The 1.1V operation and on-module PMIC reduce total memory power draw, which matters in constrained edge enclosures with limited airflow. Distributor positioning (corewavelabs, globalmemorysupply) explicitly targets edge compute hosts. A pair of these 32GB RDIMMs provides 64GB of DDR5-4800 bandwidth (76.8 GB/s aggregate across two channels), enough for container runtimes, local inference preprocessing, and real-time analytics, while on-die ECC maintains reliability in unattended environments where error scrubbing and downtime windows are limited.
おすすめ
Low-VM-Density Virtualization Hosts
For virtualization hosts running moderate VM counts, 32GB RDIMMs such as the HMCG84MEBRA174N offer the best cost-per-GB granularity. CL40 CAS latency at 4800 MT/s delivers responsive performance for hypervisor overhead and guest workloads, while the registered interface supports full channel population for memory-heavy consolidation. Eight modules provide 256GB, a typical sweet spot for 20-40 light VMs. The 1.1V rail lowers idle platform power in always-on clusters, and the layered ECC (on-die plus channel CRC) reduces crash risk from cosmic-ray-induced bit flips across long uptimes. QVL-validated pairing keeps channels running at full 4800 MT/s.
おすすめ
Cloud Infrastructure Memory Pools
Cloud providers standardizing on DDR5 RDIMMs use 32GB modules like the HMCG84MEBRA174N as the fungible building block for flavor sizing (small/medium instances). The part's large distributor stock - over 22,000 pieces at icDirectory and 44,000 at Octopart Canada as of August 2026 - supports bulk procurement and predictable supply chains. JEDEC-standard SPD enables automated provisioning across heterogeneous host generations. At approximately $190 per module in single-unit quantities, fleet-wide refresh economics are favorable, and RoHS compliance simplifies environmental reporting for hyperscale ESG programs. Bulk volume tiers reduce per-GB cost further at 1,000-unit quantities.
おすすめ
Memory Upgrades and Maintenance (Aftermarket)
The HMCG84MEBRA174N is a frequent target for server memory upgrades: OWC and NEMIX RAM market validated third-party replacements, and eBay/reseller channels list 'HMCG84MEBRA174N equivalent' 32GB DDR5-4800 PC5-38400 modules. When refreshing an existing SK hynix-populated server, mixing this module with sibling suffixes (113N, 115N, 107N, BQA174N) is validated by these compatibility lists, protecting channel speed. IT teams should verify rank consistency (1Rx4) across existing DIMMs and confirm the platform QVL before deployment. Lifetime-warranty aftermarket options provide alternative support chains for out-of-warranty servers.
おすすめ
Workstations and High-Performance Client Platforms
Select workstation platforms (Intel Xeon W, AMD Threadripper PRO) that accept RDIMMs can use the HMCG84MEBRA174N for cost-effective large memory configurations. Content creation, CAD, and simulation workloads that exceed 128GB benefit from populating eight 32GB RDIMMs for 256GB at full DDR5-4800 bandwidth. The VLP (very low profile) form factor cited in distributor listings aids clearance in compact workstation chassis with aftermarket CPU coolers. Because professional workstations enforce QVL lists, verify support for 1Rx4 x4 registered modules before purchase; in UDIMM-only consumer platforms, RDIMMs are electrically incompatible and will not boot.
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: HMCG84MEBRA174N — 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 | HMCG84MEBRA113N | HMCG84MEBRA115N | HMCG84MEBRA107N | HMCG84MEBQA174N | HMCG88MEBRA107N | HMCG84AGBRA191N |
|---|---|---|---|---|---|---|---|
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin SDP-RDIMM - same socket | 288-pin RDIMM - same |
| Brand | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | 4800 MT/s (PC5-38400) | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 5600 MT/s class (+17%) |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC / Registration | Yes (ECC Registered, on-die ECC) | Yes | Yes | Yes | Yes | Yes | Yes |
主な差別化要因
- Identical-spec sibling modules widely validated for interchange （vs HMCG84MEBRA113N)
- Single-rank 1Rx4 organization for lower power and simpler training （vs HMCG88MEBRA107N)
- Massive multi-distributor stock availability （vs HMCG84AGBRA191N)
設計ノート
Verify rank before deployment. Distributor listings conflict on this module's rank: several list 1Rx4 while others (e.g., harddiskdirect, essentialcircuits, etechbuy) describe 2Rx4 dual-rank. Populating one channel with 1Rx4 and another with 2Rx4 modules can cause the platform to drop to a lower common speed. Check the SPD data via BIOS or dmidecode after installation to confirm the actual rank of received lots, and keep channels homogeneous.
RDIMMs are socketed, so no PCB design work is required, but server chassis airflow matters: DDR5 modules dissipate heat via the on-module PMIC, and sustained operation above the JEDEC ambient envelope shortens retention. Maintain front-to-back airflow across DIMM banks and avoid stacking cables directly over DIMM slots. The very low profile (VLP) variant cited in listings improves clearance in 1U chassis; confirm the height variant shipped matches your chassis specification.
Never mix RDIMMs with UDIMMs or LRDIMMs on the same platform or channel - the registering buffer makes them electrically incompatible with unbuffered sockets and the system will fail to POST. When expanding an existing server populated with HMCG84-series modules, prefer same-family suffixes (113N/115N/107N/BQA174N) validated as compatible by OWC and NEMIX replacement lists. After installation, run a full memory test (POST memory training plus a multi-pass test) to confirm stable operation at 4800 MT/s.
コンプライアンス情報
OWC compatibility listing states 'JEDEC-Standard and ROHS Compliant' for modules validated against HMCG84MEBRA174N. REACH/halogen-free/conflict-minerals status requires the manufacturer material declaration for the specific date code.
