HMCG84AEBRA - 32GB DDR5 4800 RDIMM 1Rx4 ECC Reg | SK hynix
部品番号: HMCG84AEBRA ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $195 | $195.00 |
| 10 | $178.5 | $1,785.00 |
| 50 | $168 | $8,400.00 |
| 100 | $159 | $15,900.00 |
| 500 | $149.5 | $74,750.00 |
HMCG84AEBRA 概要
A Registered DIMM (RDIMM) is a type of server-class memory module that places a register buffer between the DRAM chips and the memory controller, electrically isolating the controller from the heavy capacitive load of multiple ranks. RDIMMs sit in the memory module hierarchy alongside UDIMMs (unbuffered), LRDIMMs (load-reduced), and MRDIMMs (multiplexed rank), and are the workhorse module type for mainstream dual-socket servers. The 1Rx4 organization means all DRAM chips reside on a single rank accessed across a 64-bit data width split into four x4 devices, which trades peak bandwidth per access for higher module density at lower cost-per-bit.
Key features of the HMCG84AEBRA include JEDEC DDR5-4800 conformance, on-module ECC (error-correcting code) for single-bit error correction and multi-bit error detection, on-board voltage regulation via the 12 V PMIC, and the SK hynix 1ynm-class DRAM die. The module carries server-grade validation against common server CPU memory reference designs and supports the standard server thermal envelope of 0–95 °C operating temperature.
Typical applications of the HMCG84AEBRA include dual-socket mainstream servers, virtualization hosts running VMware ESXi / Hyper-V / KVM, in-memory databases such as SAP HANA and Redis Enterprise, deep-learning inference nodes, and edge / HPC compute nodes. It is also used as the baseline DDR5-4800 building block for customers who plan to upgrade to higher-speed 5600 MT/s modules later.
When designing with this module, follow the server OEM's Qualified Vendor List (QVL) for the exact platform — many OEM servers validate only specific SPD programming revisions (HMCG84AEBRA vs HMCG84AEBRA115N vs HMCG84MEBRA). Mixing 1Rx4 and 2Rx4 modules in the same channel is allowed only in some platforms; consult the BIOS release notes.
This page synthesizes distributor pricing, module-revision cross-references, and platform compatibility notes not collated in a single SK hynix product folder.
ドロップイン代替品: HMCG84AEBRA — 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: HMCG84AEBRA （同一形状・フットプリント） — 相違点: Form Factor, Memory Type, Packaging.
クイック比較ツール — 並列比較する代替部品を選択:
HMCG84AEBRA115N
✅ ドロップイン📋 参考代替品（カタログ未掲載）
HMCG84MEBRA107N
✅ ドロップイン✓ 在庫あり
$69.5 / 個
データシートを見る →M329R4GA0BB0-CQK
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MTC10F1084S1EC48BA1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
HMCG84AEBRA 最大定格＆電気的特性
| Capacity | 32 GB |
| メモリタイプ | DDR5 SDRAM |
| Speed Grade | DDR5-4800 (PC5-38400) |
| Peak Transfer Rate | 4800 MT/s |
| Module Type | RDIMM (Registered DIMM) |
| Rank Configuration | 1Rx4 (Single Rank, x4 devices) |
| ECC Support | Yes (On-module ECC) |
| Form Factor | 288-pin EC8 RDIMM |
| Operating Voltage | 1.1 V |
| PMIC | On-module 12 V PMIC (DDR5 standard) |
| 動作温度 | 0 °C to 95 °C (server ambient) |
| JEDEC Conformance | DDR5-4800 (PC5-38400, CL40) |
| CASレイテンシ | CL40 |
| Compatible Platform | Intel Sapphire Rapids / AMD Genoa servers |
| RoHS ステータス | Compliant |
| Packaging | Anti-static blister pack |
HMCG84AEBRA standard ピン配置ガイド
HMCG84AEBRA (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: HMCG84AEBRA.
詳細は データシート をご参照ください。
主な用途
HMCG84AEBRA の用途: 6 件s: Dual-Socket Mainstream Servers, Virtualization Hosts (VMware ESXi / Hyper-V / KVM), In-Memory Databases (SAP HANA / Redis Enterprise), AI Inference Servers (CPU-bound inference), Edge Compute / Telco NFV Servers, HPC Cluster Compute Nodes.
Dual-Socket Mainstream Servers
The HMCG84AEBRA is the workhorse DDR5-4800 RDIMM for mainstream dual-socket servers built on Intel Sapphire Rapids / 4th Gen Xeon Scalable and AMD EPYC 9004 (Genoa). Its 32 GB capacity per module lets integrators populate 8 channels per socket with 8 modules for a balanced 256 GB total, ideal for virtualization hosts and mid-tier databases. The 1Rx4 organization keeps the rank-to-rank turnaround penalty low, which suits latency-sensitive virtualization workloads where the memory controller frequently switches ranks.
おすすめ
Virtualization Hosts (VMware ESXi / Hyper-V / KVM)
The HMCG84AEBRA's 32 GB density and ECC capability suit dense virtualization hosts running 100-300 VMs per host. Each VM typically consumes 2-8 GB, so a 256 GB configuration supports the typical oversubscription ratio used by private-cloud operators. The on-module ECC corrects soft errors transparently, which is critical for long-running VM workloads where a single bit-flip can crash a guest or corrupt a database page. DDR5-4800 also provides the bandwidth headroom needed for vMotion / live-migration streams during host maintenance.
おすすめ
In-Memory Databases (SAP HANA / Redis Enterprise)
The HMCG84AEBRA enables in-memory database deployments by providing the 32 GB building block needed for SAP HANA scale-up configurations or Redis Enterprise clusters. SAP HANA's single-node scale-up limit per socket is tied to channel count and DIMM density, and 32 GB RDIMMs are the sweet-spot density for cost-per-GB optimization. The JEDEC-standard DDR5-4800 speed class ensures predictable latency for transactional workloads, while the 1Rx4 organization minimizes the row-buffer conflict penalty that hurts random read throughput.
おすすめ
AI Inference Servers (CPU-bound inference)
The HMCG84AEBRA is well-suited for CPU-bound AI inference servers where the model weights and activations are loaded into DRAM rather than GPU HBM. A 256 GB DDR5-4800 configuration can hold a 70B-parameter quantized model (4-bit) plus working set, enabling CPU-only inference on INT4-quantized LLMs. The ECC correction capability is essential for multi-day inference workloads where soft errors would otherwise corrupt token outputs. Pairing 32 GB RDIMMs with Intel Sapphire Rapids or AMD Genoa enables cost-effective CPU-inference deployments at hyperscaler scale.
おすすめ
Edge Compute / Telco NFV Servers
The HMCG84AEBRA's 0–95 °C operating temperature range and server-grade ECC make it suitable for edge-compute and telco NFV server platforms where ambient temperatures are higher than controlled datacenter aisles. Edge servers running 5G user-plane functions (UPFs) and virtualized RAN (vRAN) workloads benefit from the predictable DDR5-4800 latency, and the 32 GB per-module density enables compact 1U / 2U edge designs. The on-module PMIC also simplifies the motherboard power design, which is valuable for cost-sensitive edge platforms.
おすすめ
HPC Cluster Compute Nodes
The HMCG84AEBRA's 32 GB capacity and DDR5-4800 bandwidth fit HPC cluster compute nodes used for CFD, finite-element analysis, and seismic processing. Many HPC workloads are bandwidth-sensitive and benefit from the 38.4 GB/s per-module peak transfer rate. The 1Rx4 organization also enables higher per-channel population than 2Rx4 modules, so a single CPU socket can host 8 DIMMs without the rank-overcrowding penalty that slows HPC codes. ECC is essential for long-running simulations where undetected memory errors would invalidate months of compute.
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: HMCG84AEBRA — 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 | HMCG84AEBRA115N | HMCG84MEBRA107N | M329R4GA0BB0-CQK | MTC10F1084S1EC48BA1 |
|---|---|---|---|---|---|
| Brand | SK hynix | SK hynix | SK hynix | Samsung Electronics | Micron Technology |
| Package | 288-pin EC8 RDIMM | 288-pin EC8 RDIMM - same | 288-pin EC8 RDIMM - same | 288-pin EC8 RDIMM - same | 288-pin EC8 RDIMM - same |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Speed Grade | DDR5-4800 (PC5-38400) | DDR5-4800 (PC5-38400) | DDR5-4800 (PC5-38400) | DDR5-4800 (PC5-38400) | DDR5-4800 (PC5-38400) |
| Rank Configuration | 1Rx4 (Single Rank) | 1Rx4 (Single Rank) | 2Rx4 (Dual Rank) | 1Rx4 (Single Rank) | 1Rx4 (Single Rank) |
| ECC Support | Yes (On-module ECC) | Yes | Yes | Yes | Yes |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Module Type | RDIMM (Registered) | RDIMM | RDIMM | RDIMM | RDIMM |
| Compatible Platforms | Intel Sapphire Rapids / AMD Genoa | Same | Same | Same | Same |
| Approx. Unit Price (qty 1, as of 2026-10-11) | $195.00 | ~$195 | ~$205 | ~$210 | ~$205 |
主な差別化要因
- 1Rx4 single-rank topology simplifies channel population （vs HMCG84MEBRA107N)
- Drop-in compatible with cross-brand equivalents （vs M329R4GA0BB0-CQK (Samsung) / MTC10F1084S1EC48BA1 (Micron))
- Lower cost per GB than 2Rx4 dual-rank variants （vs HMCG84MEBRA107N)
設計ノート
Always verify the OEM Qualified Vendor List (QVL) before deploying HMCG84AEBRA modules. The suffix (AEBRA vs AEBRA115N vs MEBRA107N) encodes the SPD programming revision; many OEM servers validate only specific revisions. Estimated: a BIOS / firmware update is sometimes required before the memory controller recognizes newer SPD revisions on platforms released before the module revision launched.
When populating HMCG84AEBRA modules in a server, always balance population across memory channels and populate the highest-numbered DIMM slots first per channel (per Intel / AMD memory population guides). Mixing 1Rx4 and 2Rx4 modules in the same channel forces the channel to fall back to the lowest common speed and may disable certain performance features; estimate based on Intel Sapphire Rapids memory population rules that 1Rx4 / 2Rx4 mixing is permitted only on certain SKUs.
The HMCG84AEBRA is rated for 0–95 °C operating temperature but actual DIMM temperatures in dense 1U servers can reach 85–90 °C under sustained load. Estimated: airflow of 30–40 CFM per DIMM slot is typically required to keep junction temperatures below 95 °C in a fully populated 1U chassis. Use the on-module thermal sensor (read via the BMC / IPMI) to monitor DIMM temperatures in production.
DDR5 RDIMMs include an on-module 12 V-input PMIC that converts to the 1.1 V DRAM supply. Estimated: the HMCG84AEBRA consumes approximately 4–6 W per module under sustained 4800 MT/s read workload. Ensure the server motherboard's 12 V DIMM rail can supply the inrush current during PMIC startup (typically 5 A per module for <1 ms); check the platform's 12 V rail derating.
コンプライアンス情報
RoHS compliant per SK hynix product page. Lead-free per JEDEC DDR5 module specification. Not AEC-Q100 qualified — this is a server / datacenter module, not an automotive-grade memory.
