HMCG84MEBRA107N - 32GB DDR5-4800 ECC RDIMM | SK Hynix
料号： HMCG84MEBRA107N ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $89 | $89.00 |
| 10 | $84.5 | $845.00 |
| 100 | $79 | $7,900.00 |
| 500 | $74 | $37,000.00 |
| 1,000 | $69.5 | $69,500.00 |
HMCG84MEBRA107N 概述
A registered DIMM (RDIMM) is a server-class memory module that buffers the address and command signals through a register IC before they reach the DRAM devices. This buffering reduces the electrical load on the memory controller, allowing servers to populate more DIMM slots per channel than with unbuffered UDIMMs. RDIMMs sit within the memory hierarchy of DDR5 SDRAM -> registered memory module -> server memory subsystem, and are the default choice for data-center platforms built on Intel Xeon Scalable and AMD EPYC processors.
Key features of this module include the 32GB capacity organized as 1Rx4, the DDR5-4800 transfer rate (PC5-38400 bandwidth), and on-module ECC with registered signaling per the JEDEC DDR5 RDIMM architecture. DDR5 brings the power management IC (PMIC) on-module, cutting the host board's voltage-regulation burden, while the 1.1V operating voltage lowers system power compared with DDR4's 1.2V.
The dual-data-rate DDR5 architecture with two independent 32-bit sub-channels per module improves effective memory concurrency, and the CL40 CAS latency at 4800 MT/s yields a 16.67 ns base cycle time. On-die ECC within each DRAM die plus link ECC protects against cell-level faults, complementing the registered ECC path expected by the server memory controller.
Typical applications include general-purpose 2-socket rack servers, edge-compute and low-VM-density hosts, virtualization platforms, and workstation-class boards with RDIMM slots. Its 32GB density balances per-channel capacity and cost, making it a common baseline DIMM for 256GB-class server configurations.
When designing or upgrading, verify the host platform's Qualified Vendor List (QVL), because server BIOSes only train speeds that the CPU memory controller and module register IC both support; mixing 1Rx4 and 2Rx4 modules on one channel may drop the trained speed below 4800 MT/s.
This page synthesizes distributor pricing, drop-in RDIMM alternatives, comparison data, and practical deployment notes not found on the manufacturer datasheet alone.
直接替换替代料： HMCG84MEBRA107N ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： HMCG84MEBRA107N （相同外形与封装尺寸） ——差异在于 Form Factor, ECC, Module Type, Data Rate, CAS Latency.
快速对比工具——选择替代料号进行并排对比：
HMCG88MEBRA107N
✅ 直接替换📋 参考替代料（不在目录中）
HMCG84MEBRA174N
✅ 直接替换✓ 有现货
$1115.625 / 个
查看数据手册 →HMCG84AGBRA191N
✅ 直接替换✓ 有现货
$103.2 / 个
查看数据手册 →HMCG78MEBRA113N
✅ 直接替换✓ 有现货
$94 / 个
查看数据手册 →HMCG78AEBRA107N
✅ 直接替换✓ 有现货
$399 / 个
查看数据手册 →A-Tech 32GB DDR5-4800 ECC RDIMM
✅ 直接替换📋 参考替代料（不在目录中）
HMCG84MEBRA107N 最大额定值与电气特性
| 存储器类型 | DDR5 SDRAM RDIMM |
| Capacity | 32 GB |
| Transfer Rate | 4800 Mbps (MT/s) |
| Bandwidth Rating | PC5-38400 |
| CAS 延迟 | CL40 |
| Operating Voltage | 1.1 V |
| Form Factor | 288-pin RDIMM (SDP-RDIMM) |
| Rank / Organization | 1Rx4 |
| ECC | Yes (registered ECC) |
| Registration | Registered (buffered address/command) |
| Packaging | Bulk |
| Application Class | Server / Data Center |
| Manufacturer | SK Hynix |
| On-module PMIC | Yes (DDR5 standard) |
HMCG84MEBRA107N standard 引脚配置指南
HMCG84MEBRA107N（standard 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： HMCG84MEBRA107N.
请参阅 数据手册 以查看完整引脚配置。
典型应用
HMCG84MEBRA107N 适用于 6 应用s: General-Purpose Rack Servers, Edge Compute Appliances, Virtualization Hosts, Workstation Memory Upgrades, Storage Controllers and Appliances, Test and Measurement Servers.
General-Purpose Rack Servers
The HMCG84MEBRA107N fits general-purpose 1U/2U rack servers that require 288-pin DDR5-4800 registered ECC memory. Its 32GB density at 4800 MT/s (PC5-38400) delivers balanced bandwidth and capacity for web serving, databases, and file services on Intel Xeon Scalable and AMD EPYC platforms. Eight modules per server yield 256GB with ECC protection and registered signaling that keeps the memory controller within load limits at full slot population. Because the DDR5 PMIC is on-module, the host board needs only a 1.1V-compliant slot, simplifying platform power design versus DDR4 generation servers.
推荐
Edge Compute Appliances
Edge compute nodes benefit from the HMCG84MEBRA107N's combination of server-class reliability and moderate power draw. The 1.1V operating voltage and on-module PMIC reduce per-module power versus DDR4 registered memory, important for passively cooled or constrained edge enclosures. The 32GB capacity supports container runtimes and local inference caches at low VM density, while DDR5-4800 bandwidth feeds modern edge SoCs without throttling. Registered ECC protects against bit errors in environments with limited service access, where an uncorrected memory fault could take a remote site offline for days.
推荐
Virtualization Hosts
For virtualization hosts running moderate VM counts, the HMCG84MEBRA107N provides the per-module capacity and bandwidth that hypervisors need. DDR5's dual 32-bit sub-channels improve concurrency for many small memory transactions typical of VM switching, and the 4800 MT/s rate sustains aggregate bandwidth across populated channels. ECC at the die, link, and registered rank layers reduces soft-error-driven VM crashes. A 12-slot platform populated with this module reaches 384GB, sufficient for most departmental consolidation workloads while keeping cost per GB competitive with higher-speed bins.
推荐
Workstation Memory Upgrades
RDIMM-capable workstation platforms can use the HMCG84MEBRA107N for CAD, simulation, and content-creation workloads. The 32GB single-rank module gives 4800 MT/s bandwidth for large model assembly and rendering scene data, while ECC catches memory errors during multi-hour render or solver jobs that would otherwise corrupt output silently. Single-rank organization keeps command-bus loading low, preserving stability at two DIMMs per channel. Verify the workstation vendor supports RDIMMs, since most desktop boards require UDIMMs and cannot accept this registered module electrically.
推荐
Storage Controllers and Appliances
Storage appliances and RAID controllers use registered DDR5 memory as write-cache and metadata buffers, where the HMCG84MEBRA107N's ECC layers matter most. A lost write-cache transaction corrupts the volume, so registered ECC plus on-die ECC materially reduces uncorrectable-error probability versus consumer memory. The 32GB capacity fits modern deduplication and metadata caches, and DDR5-4800 bandwidth keeps parity calculations and log writes from bottlenecking NVMe backend arrays. Platforms should populate channels per the controller vendor's validated population rules for the 1Rx4 organization.
推荐
Test and Measurement Servers
Instrumentation back-ends and data-acquisition servers handling high-rate streaming rely on the HMCG84MEBRA107N for jitter-tolerant buffering. DDR5-4800 provides 38.4 GB/s nominal bandwidth per module, enough to absorb multi-gigasample digitizer streams before disk offload, and registered signaling preserves signal integrity in electrically noisy rack environments. The CL40 latency at 1.1V trades a slightly higher access latency for lower power, which is acceptable in streaming workloads dominated by sequential bandwidth. ECC prevents silent corruption in long-duration logging campaigns common in test labs.
推荐
推荐产品汇总
工程参考数据： HMCG84MEBRA107N ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | HMCG88MEBRA107N | HMCG84MEBRA174N | HMCG78MEBRA113N | HMCG78AEBRA107N |
|---|---|---|---|---|---|
| Package | 288-pin RDIMM (SDP-RDIMM) | 288-pin RDIMM (SDP-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 | 16 GB | 16 GB |
| ECC / Registration | ECC, Registered | ECC, Registered | ECC, Registered | ECC, Registered | ECC, Registered |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Packaging | Bulk | Bulk | Bulk | Bulk | Bulk |
关键差异点
- Single-rank 1Rx4 organization reduces bus load （对比 HMCG88MEBRA107N)
- Double capacity of 16GB family parts （对比 HMCG78AEBRA107N)
- Cost-optimized 4800 speed bin （对比 HMCG84AGBRA191N)
设计说明
Always validate the HMCG84MEBRA107N against the server vendor's Qualified Vendor List (QVL) before deployment. Server BIOS memory-training tables only support specific register IC and DRAM combinations; an unlisted module may fall back to a lower JEDEC speed (e.g., 4400 MT/s) or fail POST. Do not mix 1Rx4 and 2Rx4 modules on the same channel without checking the platform's population rules, as mixed-rank topologies commonly derate the trained speed below DDR5-4800.
Estimated: each DDR5-4800 RDIMM draws roughly 4-6 W at 1.1V under typical server workloads (estimate based on DDR5 JEDEC-class module power envelopes, not a datasheet figure). A 24-module 2-socket server therefore budgets about 100-150 W for memory alone. Confirm the platform's per-channel power budget and airflow, since modules at the channel end see the highest inlet temperature from upstream DIMM waste heat.
DDR5 modules integrate an on-module PMIC that becomes the hottest component on the assembly. Maintain at least the server vendor's specified DIMM inlet airflow; in dense 1U chassis, use heat-spreader-equipped modules and verify intake temperature stays within the JEDEC module operating envelope. Thermal throttling of the PMIC can force the memory controller to downclock below the 4800 MT/s rating even when the DRAM itself is cool.
合规信息
Compliance data not stated in the provided distributor listings; request RoHS/REACH declarations from SK Hynix or the distributor before procurement.
