HMCG84AGBRA191N - 32GB DDR5-5600 ECC RDIMM | SK Hynix
N.º de pieza: HMCG84AGBRA191N ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $129 | $129,00 |
| 10 | $122.55 | $1.225,50 |
| 100 | $116.1 | $11.610,00 |
| 500 | $109.65 | $54.825,00 |
| 1.000 | $103.2 | $103.200,00 |
HMCG84AGBRA191N Descripción general
An RDIMM (Registered DIMM) is a server-class memory module that buffers address and command signals through a registering clock driver (RCD) before they reach the DRAM devices. This buffering reduces electrical loading on the memory controller, allowing servers to populate more DIMM slots per channel than with unbuffered UDIMMs. RDIMMs sit within the memory hierarchy as a type of DDR5 SDRAM module, belonging to the broader category of volatile main-memory components used in computing systems.
Key features include DDR5-5600 MT/s data rate for high memory bandwidth, on-die ECC and side-band ECC support for data integrity in servers, a low 1.1V operating voltage that reduces power draw and thermal load compared to DDR4 RDIMMs, and single-rank 1Rx4 organization that maximizes population flexibility on dual-processor server boards. The 288-pin form factor is the standard DDR5 server module connector.
Architecturally, DDR5 splits each module into two independent 32-bit subchannels, improving memory access efficiency. On-die ECC corrects internal DRAM cell errors before they reach the bus, while the registered interface and x4 DRAM devices provide robust error containment for enterprise workloads. At 5600 MT/s, the module delivers 44.8 GB/s peak bandwidth per module.
Typical applications include edge compute nodes, low-VM-density virtualization hosts, general-purpose rack servers, and enterprise storage controllers where 32GB-per-DIMM density at DDR5-5600 speed is the sweet spot for cost and performance.
Design consideration: verify that your server platform, BIOS, and memory controller officially support DDR5-5600 RDIMMs at the target population; many platforms derate speed as DIMMs per channel increase.
This page synthesizes distributor pricing, drop-in SK Hynix family alternatives, and practical deployment notes not found in a single manufacturer datasheet.
Alternativas directas para HMCG84AGBRA191N — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con HMCG84AGBRA191N (mismo factor de forma y huella) — difiere en Data Rate, Form Factor, ECC, Module Type, Error Correction.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
HMCG78AGBUA084N
✅ Sustitución directa✓ En stock
$262.5 / unidad
Ver hoja de datos →HMCG78AGBUA081N
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$244.95 / unidad
Ver hoja de datos →HMCG78AHBRA289N
✅ Sustitución directa✓ En stock
$68 / unidad
Ver hoja de datos →HMCG78AEBRA107N
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$399 / unidad
Ver hoja de datos →HMCG78AEBRA115N
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$541.4063 / unidad
Ver hoja de datos →HMCG78AHBRA471N
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$649 / unidad
Ver hoja de datos →HMCG78AEBRA168N
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$74 / unidad
Ver hoja de datos →HMCG84AGBRA191N Valores máximos y características eléctricas
| Capacity | 32 GB |
| Tipo de memoria | DDR5 SDRAM RDIMM |
| Velocidad de datos | 5600 MT/s |
| Bandwidth Class | PC5-44800 |
| ECC | ECC Registered |
| Rank | Single Rank (1Rx4) |
| DRAM Organization | x4 |
| Operating Voltage | 1.1 V |
| Latencia CAS | CL46 |
| Recuento de pines | 288-pin DIMM |
| Form Factor | 288-pin RDIMM |
| Configuration | 1 x 32 GB |
| Module Type | Registered DIMM (RDIMM) |
| Application Segment | Server / Datacenter |
| On-die ECC | Yes |
Guía de configuración de pines de HMCG84AGBRA191N standard
Configuración de pines para HMCG84AGBRA191N (encapsulado standard). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para HMCG84AGBRA191N.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
HMCG84AGBRA191N es adecuado para 6 aplicacións: Edge Compute Nodes, Low-VM-Density Virtualization Hosts, General-Purpose Rack Servers, Enterprise Storage Controllers, Data Center Memory Expansion / Upgrades, Network Appliance and Security Gateways.
Edge Compute Nodes
The HMCG84AGBRA191N's 32GB DDR5-5600 density and 1.1V operation make it a strong fit for edge compute servers, where nodes are space- and power-constrained but still need substantial memory bandwidth for local inference and data filtering. Its 44.8 GB/s per-module bandwidth (PC5-44800) accelerates data preprocessing close to the source, while the lower 1.1V rail reduces module power draw roughly 16% versus DDR4 at 1.2V, easing thermal design in compact edge enclosures. Deployed in a 1Rx4 configuration, it also keeps per-channel electrical loading low, supporting populated platforms with limited cooling. Typical builds pair 8-16 of these modules with Xeon Scalable or EPYC processors for 256-512GB per node.
Recomendado
Low-VM-Density Virtualization Hosts
For virtualization hosts running a modest number of VMs per node, the HMCG84AGBRA191N provides a balanced 32GB-per-DIMM capacity at DDR5-5600, giving the hypervisor and guest workloads ample bandwidth without over-provisioning density. Registered ECC operation with on-die ECC protects against single-bit memory errors that would otherwise corrupt VM state, a critical requirement for multi-tenant infrastructure. At CL46 and 5600 MT/s, the module reduces memory latency spikes under concurrent VM scheduling versus DDR4-3200 RDIMMs. Populate 2 DIMMs per channel across both EPYC or Xeon sockets to balance bandwidth and cost; avoid mixing with 4800 MT/s modules, which force the channel to downclock and forfeit the bandwidth advantage.
Recomendado
General-Purpose Rack Servers
In general-purpose 1U/2U rack servers, HMCG84AGBRA191N fills the mainstream capacity tier: 32GB per DIMM lets a dual-socket server reach 256GB-1TB using standard populations without stepping up to 64GB or 128GB modules. Its single-rank 1Rx4 organization simplifies platform population rules and keeps signal integrity margins high on long server DIMM traces, while ECC registration protects long-running enterprise workloads such as web serving, databases, and file services. The DDR5 dual-32-bit subchannel architecture improves random-access efficiency for mixed workloads compared with DDR4's single 64-bit channel. Standard JEDEC 288-pin RDIMM form factor ensures drop-in compatibility with qualified server platforms.
Recomendado
Enterprise Storage Controllers
Enterprise storage controllers and all-flash array heads use RDIMM main memory for write coalescing, metadata caching, and parity computation - workloads that benefit directly from HMCG84AGBRA191N's 5600 MT/s bandwidth and registered ECC reliability. The x4 DRAM organization enables side-band ECC so the controller can correct single-bit errors transparently, protecting data integrity during cached-write windows. Its 1.1V operation reduces module heat inside densely packed storage shelves where airflow is shared with NVMe drives. A typical configuration uses 8 modules (256GB) per controller pair with failover, where identical MPNs across both controllers simplify spare-part inventory and validated configuration management.
Recomendado
Data Center Memory Expansion / Upgrades
For data centers refreshing DDR4 fleets, HMCG84AGBRA191N is a standard building block for DDR5 server upgrades, offering a 32GB-per-DIMM step that typically doubles density per DIMM slot versus legacy 16GB DDR4 modules. The 5600 MT/s rate delivers up to 1.75x the per-module bandwidth of DDR4-3200, directly improving memory-bound application throughput. Because it is a JEDEC-standard 288-pin RDIMM, procurement can source across multiple vendors while retaining platform QVL compliance. During mixed-generation transitions, keep this module only on DDR5 platforms - mixing memory generations or module types (RDIMM with UDIMM/LRDIMM) within a server is electrically incompatible and will prevent POST.
Recomendado
Network Appliance and Security Gateways
High-throughput network appliances - firewalls, load balancers, and 5G UPF gateways - need large flow tables and packet buffers in main memory, where HMCG84AGBRA191N's 44.8 GB/s per-module bandwidth supports line-rate packet processing at 100G+ speeds. Single-rank 1Rx4 configuration minimizes memory controller latency jitter, which matters for deterministic packet forwarding deadlines, and registered ECC prevents bit errors from corrupting session state during weeks of continuous uptime. The 1.1V rail keeps the memory subsystem within the tight power budgets of front-access network appliance chassis. Pair 4-8 modules with DPDK or VPP-based data planes sized at 128-256GB per appliance.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para HMCG84AGBRA191N — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | HMCG78AGBUA084N | HMCG78AHBRA289N | HMCG78AEBRA107N | HMCG78AEBRA115N |
|---|---|---|---|---|---|
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same |
| Brand | SK Hynix | SK Hynix | SK Hynix | SK Hynix | SK Hynix |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | 5600 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s |
| Bandwidth Class | PC5-44800 | PC5-38400 | PC5-38400 | PC5-38400 | PC5-38400 |
| Rank Configuration | Single Rank (1Rx4) | Single Rank (1Rx4) | Dual Rank (2Rx4) | Single Rank (1Rx4) | Single Rank (1Rx4) |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| ECC | ECC Registered | ECC Registered | ECC Registered | ECC Registered | ECC Registered |
Diferenciadores clave
- Highest speed grade in the SK Hynix 32GB RDIMM lineup on this page (frente a HMCG78AGBUA084N)
- Single-rank 1Rx4 organization for maximum population flexibility (frente a HMCG78AHBRA289N)
- Lowest power per GB at 1.1V DDR5 vs legacy DDR4 alternatives (frente a HMA84GR7CJR4N-RD)
Notas de diseño
Never mix HMCG84AGBRA191N (DDR5-5600) with DDR5-4800 HMCG78-series modules in the same channel unless downclocking is acceptable - most platforms run the entire memory subsystem at the slowest module's speed, forfeiting the 17% bandwidth advantage. Also confirm module type compatibility: RDIMMs cannot be mixed with UDIMMs or LRDIMMs on the same platform, and incompatible combinations typically prevent POST. Always follow the server vendor's DIMM population table for mixed-population rules.
HMCG84AGBRA191N operates at the DDR5-standard 1.1V. Estimated thermal impact: a fully populated dual-socket server with 16 modules draws meaningfully less module power than an equivalent DDR4-3200 population at 1.2V, reducing chassis inlet temperature rise. Verify the platform's DDR5 power delivery and DIMM slot thermal ratings at 5600 MT/s operation, since higher data rates increase DRAM IO power somewhat. For dense 1U builds, monitor DIMM inlet temps via BMC sensors during burn-in.
The registered (buffered) address/command interface and single-rank 1Rx4 organization of HMCG84AGBRA191N keep per-channel electrical loading low, which is why it typically sustains 5600 MT/s at one DIMM per channel. At two DIMMs per channel, most platforms derate to 4800 MT/s or lower per the JEDEC speed-bin derating tables. If your workload needs full bandwidth, prefer one DIMM per channel (DPC1) populations; validate stability with a memory stress test (e.g., extended memtest86+ passes) after BIOS updates.
Información de cumplimiento
Compliance data not present in verified web data; SK Hynix server DRAM modules are typically RoHS compliant but this must be confirmed from manufacturer documentation.
