HMCG84MEBRA107N - 32GB DDR5-4800 ECC RDIMM | SK Hynix
MPN： HMCG84MEBRA107N ✓ 啟用中HMCG84MEBRA107N 概覽
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.
直接替換替代品，適用於 HMCG84MEBRA107N — 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： HMCG84MEBRA107N （相同外形與佔位） — 差異在於 Form Factor, ECC, Module Type, Data Rate, CAS Latency.
HMCG88MEBRA107N
✅ 直接替換📋 參考替代品（不在目錄中）
HMCG84MEBRA174N
✅ 直接替換✓ 有庫存
$1115.625 / 單位
查看資料表 →HMCG84AGBRA191N
✅ 直接替換聯絡詢價
查看資料表 →HMCG78MEBRA113N
✅ 直接替換聯絡詢價
查看資料表 →HMCG78AEBRA107N
✅ 直接替換聯絡詢價
查看資料表 →A-Tech 32GB DDR5-4800 ECC RDIMM
✅ 直接替換📋 參考替代品（不在目錄中）
HMCG84MEBRA107N 最大額定值與電氣特性
| 記憶體類型 | DDR5 SDRAM RDIMM |
| Capacity | 32 GB |
| Transfer Rate | 4800 Mbps (MT/s) |
| Bandwidth Rating | PC5-38400 |
| CAS 延遲 | 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 腳位配置指南
HMCG84MEBRA107N（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： HMCG84MEBRA107N.
請參閱 資料表 以查看完整腳位配置。
典型應用
HMCG84MEBRA107N 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 HMCG84MEBRA107N — 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 | 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 |
主要差異化特點
- Single-rank 1Rx4 organization reduces bus load (對比HMCG88MEBRA107N)
- Double capacity of 16GB family parts (對比HMCG78AEBRA107N)
- Cost-optimized 4800 speed bin (對比HMCG84AGBRA191N)
設計說明
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.
合規資訊
Compliance data not stated in the provided distributor listings; request RoHS/REACH declarations from SK Hynix or the distributor before procurement.
