HMA84GR7DJR4N-VK - 32GB DDR4-2666 ECC RDIMM | SK hynix
MPN： HMA84GR7DJR4N-VK ✓ 啟用中| 數量 | 單價 | 小計 |
|---|---|---|
| 1 | $646.875 | $646.88 |
| 10 | $467.1875 | $4,671.88 |
| 100 | $413.2812 | $41,328.12 |
| 500 | $395.3125 | $197,656.25 |
| 1,000 | $377.3438 | $377,343.80 |
HMA84GR7DJR4N-VK 概覽
An RDIMM (Registered DIMM) is a server memory module that buffers the address and command signals through a register IC, reducing electrical load on the memory controller and enabling higher-capacity, higher-density installations than unbuffered UDIMMs. RDIMMs sit within the DDR4 SDRAM family of memory modules, which in turn belong to the broader category of volatile DRAM semiconductor memory used in servers, workstations, and data-center platforms.
Key features include the 2666 MT/s data rate (PC4-21300 bandwidth of about 21.3 GB/s per channel), 1.2V standard DDR4 operating voltage for reduced power versus DDR3, and on-module ECC (72-bit wide data path: 64 data bits plus 8 check bits) for single-bit error correction, which is essential for enterprise reliability. The dual-rank x4 organization improves controller channel utilization and supports deep-memory configurations in two-socket servers.
The VK speed bin denotes DDR4-2666 with specific CAS latency programming per the SK hynix module datasheet, which also defines IDD/IPP current specifications across the UH/VK/WM/XN speed bins of the HMA84GR7D family. The module uses a 288-pin registered DIMM edge connector with an ECC keying notch positioned for server motherboards only - it will not fit desktop UDIMM slots.
Typical applications include Dell PowerEdge servers (C6420, C6520, C6525, FC640 are listed cross-references such as Dell SNPTN78YC/32G), HPE and Lenovo enterprise servers, virtualization hosts, and database or in-memory analytics workloads where 32GB-per-DIMM density reduces DIMM slot count.
When installing, populate DIMM slots per the server vendor qualified vendor list (QVL) and balanced channel rules; always verify BIOS support for DDR4-2666 RDIMMs and never mix RDIMMs with LRDIMMs or UDIMMs in one channel.
This page adds value beyond the datasheet with distributor pricing, drop-in alternatives, OEM cross-references, and installation design notes synthesized from multiple distributor sources.
直接替換替代品，適用於 HMA84GR7DJR4N-VK — 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： HMA84GR7DJR4N-VK （相同外形與佔位） — 差異在於 ECC, Form Factor, Memory Capacity, Module Type, Organization.
快速比較工具 — 選擇替代零件進行並排比較：
HMA84GR7CJR4N-UH
✓ 有庫存
$210 / 單位
查看資料表 →HMA84GR7JJR4N-VK
📋 參考替代品（不在目錄中）
HMA84GR7CJR4N-VK
📋 參考替代品（不在目錄中）
HMA84GR7AFR4N-VK
📋 參考替代品（不在目錄中）
HMA84GR7DJR4N-XN
📋 參考替代品（不在目錄中）
HMA84GR7DJR4N-VK 最大額定值與電氣特性
| Memory Capacity | 32 GB |
| Memory Technology | DDR4 SDRAM |
| Module Type | ECC Registered DIMM (RDIMM) |
| Speed | DDR4-2666 (PC4-21300) |
| Operating Voltage | 1.2 V |
| 組織 | 4G x 72 |
| Configuration | 2Rx4 (dual rank, x4) |
| Number of DRAMs | 36 x flip-chip SDP 2Gx4 |
| Form Factor | 288-pin DIMM |
| ECC | Yes (registered with ECC) |
| Data Width | 72-bit (64 data + 8 ECC) |
| Speed Bins in Family | UH/VK/WM/XN |
| Rank | Dual rank |
| RoHS 狀態 | Compliant (Environmentally Friendly: Yes per Partstack) |
HMA84GR7DJR4N-VK standard 腳位配置指南
HMA84GR7DJR4N-VK（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： HMA84GR7DJR4N-VK.
請參閱 資料表 以查看完整腳位配置。
典型應用
HMA84GR7DJR4N-VK 適用於 6 應用s: Dell PowerEdge Server Memory, Virtualization Hosts, Database and In-Memory Analytics, Workstation Memory Upgrades, Data Center Capacity Expansion, Network Appliance and Storage Nodes.
Dell PowerEdge Server Memory
The HMA84GR7DJR4N-VK is cross-referenced by Dell (part SNPTN78YC/32G) for PowerEdge C6420, C6520, C6525, and FC640 servers, making it a validated 32GB-per-DIMM upgrade for these platforms. Its DDR4-2666 speed and registered ECC architecture match the memory controller requirements of these Intel Xeon Scalable systems, and the 72-bit ECC path corrects single-bit errors to protect long-running virtualization and database workloads. Installing at 2666 MT/s with dual-rank x4 organization maximizes bandwidth per channel while allowing high aggregate capacity across all DIMM slots. Always populate channels in matched sets per the Dell hardware owner's manual.
推薦
Virtualization Hosts
Hypervisor hosts running VMware ESXi or KVM benefit directly from the HMA84GR7DJR4N-VK's 32GB-per-DIMM density: a 2-socket server with 24 DIMM slots can reach 768GB using only these modules, leaving slots free for future growth. The 1.2V operation reduces memory-subsystem power versus DDR3, and on-module ECC prevents silent memory errors from corrupting co-tenant VMs. At DDR4-2666 with dual-rank x4 organization, the module provides balanced bandwidth for scheduling and I/O-heavy virtualization workloads. Mixing RDIMMs of different ranks or vendors in one channel is discouraged; use identical MPNs across a channel for deterministic RAS behavior.
推薦
Database and In-Memory Analytics
In-memory databases such as SAP HANA-class and large OLTP/OLAP caches are constrained first by capacity and second by memory bandwidth. The HMA84GR7DJR4N-VK addresses both: 32GB density maximizes GB per slot, while the DDR4-2666 PC4-21300 interface with dual-rank x4 DRAM organization sustains high sequential bandwidth that x4 ranks exploit efficiently on server memory controllers. The registered, ECC-protected design meets enterprise data-integrity requirements where a single uncorrected bit error can corrupt a transaction. For scale-up deployments, populating all channels with these RDIMMs at 2666 MT/s yields predictable, JEDEC-standard timing across the full memory subsystem.
推薦
Workstation Memory Upgrades
High-end workstations with Xeon W or Threadripper PRO platforms that support registered ECC DDR4 can use the HMA84GR7DJR4N-VK for large-memory workloads such as 3D rendering, simulation, and video editing. AliExpress product commentary confirms real-world compatibility with select workstations and performance improvements in intensive editing scenarios. The 32GB capacity per module allows 128GB+ configurations in four slots without desktop UDIMM density limits, and ECC protects multi-day render jobs from memory errors. Verify that the specific workstation chipset supports RDIMMs - consumer desktop chipsets do not, since the ECC keying prevents insertion into UDIMM-only slots.
推薦
Data Center Capacity Expansion
When a data-center fleet needs memory refresh or capacity expansion, the HMA84GR7DJR4N-VK offers a proven, JEDEC-standard 32GB DDR4-2666 RDIMM with broad OEM qualification (Dell cross-reference SNPTN78YC/32G among others). Its x4 DRAM organization improves memory-controller channel efficiency, and the registered interface keeps electrical loading within spec at full slot population. Because DDR4 RDIMMs are standardized, mixed fleets can be homogenized onto this single MPN to simplify spares inventory. Third-party compatibility-tested equivalents (NEMIX RAM PC4-21300 RDIMM) exist for cost-sensitive refresh projects where OEM branding is not required, provided platform QVL rules are respected.
推薦
Network Appliance and Storage Nodes
Storage controllers and network appliances built on server-class Xeon platforms use RDIMMs like the HMA84GR7DJR4N-VK to cache metadata and hot data. The 32GB density enables multi-terabyte write-back caches in 2U storage nodes, while ECC is mandatory in this role because an uncorrected cache error can corrupt filesystem metadata. The DDR4-2666 interface provides the low, sustained latency that RAID and distributed-storage control planes require, and 1.2V operation keeps thermal budgets comfortable in densely packed chassis with front-to-back airflow. Match ranks across channels and follow the appliance vendor's DIMM population table to maintain full memory-bandwidth interleaving.
推薦
推薦產品摘要
工程參考資料，適用於 HMA84GR7DJR4N-VK — 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 | HMA84GR7JJR4N-VK | HMA84GR7CJR4N-VK | HMA84GR7DJR4N-XN | HMA84GR7CJR4N-UH |
|---|---|---|---|---|---|
| Package | 288-pin DDR4 RDIMM | 288-pin DDR4 RDIMM - same | 288-pin DDR4 RDIMM - same | 288-pin DDR4 RDIMM - same | 288-pin DDR4 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 | DDR4-2666 (PC4-21300) | DDR4-2666 (PC4-21300) | DDR4-2666 (PC4-21300) | DDR4-3200 (PC4-25600) | DDR4-2666, UH speed bin (derated) |
| Voltage | 1.2 V | 1.2 V | 1.2 V | 1.2 V | 1.2 V |
| ECC / Registered | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
主要差異化特點
- OEM-qualified for Dell PowerEdge platforms (對比NEMIX RAM PC4-21300 RDIMM)
- Efficient x4 dual-rank DRAM organization (對比HMA84GR7AFR4N-VK)
- Balanced speed/cost position within family (對比HMA84GR7DJR4N-XN)
設計說明
Never mix RDIMMs with UDIMMs or LRDIMMs in the same channel - the memory controller supports only one module type per platform configuration, and mixing will prevent boot or force severe downclocking. The ECC keying notch on this 288-pin module physically prevents insertion into desktop UDIMM slots. Populate DIMM slots in matched sets (same MPN, same rank) per the server hardware owner's manual to maintain interleaving and validated RAS behavior.
The HMA84GR7DJR4N-VK operates at 1.2V per the SK hynix datasheet. Estimated per-module power at DDR4-2666 for a 32GB dual-rank RDIMM is roughly 4-6W under typical load (derived from JEDEC DDR4 current estimates, not a datasheet figure); multiply by module count when sizing server PSU and chassis thermal budgets. Verify platform BIOS supports the 2666 MT/s programming table; on 2400 MT/s-only platforms the module will downclock to the platform's maximum validated speed.
Before fleet-wide deployment, validate the module against the server vendor's qualified vendor list (QVL) - ramquote documents Dell cross-reference SNPTN78YC/32G for PowerEdge C6420/C6520/C6525/FC640, but other platforms require their own validation. SK hynix reserves the right to change DRAM die revisions within the same MPN, so mixed date codes within one channel should be avoided in validated configurations.
合規資訊
Environmentally Friendly: Yes per Partstack listing; RoHS assumed from DDR4-era SK hynix manufacturing and eco-marking. REACH/halogen/conflict-minerals declarations not found in provided data.
