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HMA82GU7DJR8N-VK
The HMA82GU7DJR8N-VK is SK Hynix's enterprise-grade DDR4 unbuffered memory module designed for mission-critical server and workstation workloads. As a 288-pin DDR4 UDIMM, it provides 16GB of memory capacity with a data transfer rate of 2666 MT/s, conforming to the PC4-21300 standard with CL19 latency timings (19-19-19).
Equipped with ECC (Error-Correcting Code) technology, this module automatically detects and corrects single-bit memory errors, helping to prevent system crashes, data corruption, and computational errors in environments where data integrity is paramount. The unbuffered (UDIMM) architecture offers lower latency compared to registered memory, making it suitable for servers and workstations that support ECC UDIMM configurations.
Built on a 2Rx8 (dual-rank x8) organization, this module balances capacity and performance efficiently. It operates at just 1.2V, reducing power consumption and heat output compared to previous-generation memory, which contributes to lower overall server energy costs and improved thermal stability. Each module undergoes rigorous testing to ensure compatibility and reliability under continuous heavy-load conditions.
The HMA82GU7DJR8N-VK is compatible with server and workstation motherboards that support DDR4 ECC UDIMM memory, making it suitable for a wide range of enterprise applications including database servers, virtualization hosts, cloud computing infrastructure, and high-performance workstations.
Parameter | Specification |
|---|---|
Part Number | HMA82GU7DJR8N-VK |
Brand | SK Hynix |
Capacity | 16GB |
Memory Type | DDR4 SDRAM |
Form Factor | UDIMM (Unbuffered DIMM) |
Speed | 2666 MHz / 2666 MT/s |
PC Standard | PC4-21300 (PC4-21300V-E) |
ECC | Yes (Error-Correcting Code) |
Rank | 2Rx8 (Dual Rank x8) |
Pin Count | 288 Pin |
Voltage | 1.2V |
CAS Latency | CL19 |
Timings | 19-19-19 |
Application | Server / Workstation |
ECC Error Correction — Automatically detects and corrects single-bit memory errors, protecting data integrity and reducing system downtime in 24/7 operating environments.
Unbuffered Low Latency — UDIMM architecture delivers lower memory latency compared to RDIMM, ideal for performance-sensitive server and workstation applications.
1.2V Low Power Design — Reduces power consumption and heat generation, lowering server energy costs and improving thermal stability in dense rack configurations.
SK Hynix Original Chips — Manufactured with genuine SK Hynix memory chips and rigorous quality testing, ensuring reliable long-term performance.
2666 MT/s High Bandwidth — Delivers fast data transfer rates up to 21.3 GB/s, accelerating data processing and multitasking in enterprise workloads.
2Rx8 Dual Rank Architecture — Balances memory capacity and access efficiency for optimal performance in multi-DIMM server configurations.
Broad Compatibility — Compatible with major brand server and workstation motherboards that support DDR4 ECC UDIMM memory.
Enterprise Rack Servers — Ideal for 1U/2U rack servers running business-critical applications.
Database Servers — ECC protection ensures data accuracy for SQL, NoSQL, and in-memory database workloads.
Virtualization Hosts — Supports stable operation of VMware, Hyper-V, and KVM virtual machine environments.
Cloud Computing Infrastructure — Reliable memory for cloud hosting platforms and IaaS/PaaS deployments.
High-Performance Workstations — Suitable for content creation, CAD/CAM, engineering simulation, and scientific computing workstations.
Data Center Storage Servers — Dependable memory for NAS, SAN, and software-defined storage systems.
Edge Computing & Network Appliances — Stable performance for network switches, firewalls, and edge server deployments.
Q1: Is HMA82GU7DJR8N-VK compatible with regular desktop motherboards? A: No. This is an ECC UDIMM server memory module. It requires a motherboard and CPU that explicitly support ECC UDIMM memory. Standard consumer desktop motherboards typically do not support ECC functionality, and some may not boot with ECC memory installed.
Q2: What is the difference between UDIMM and RDIMM? A: UDIMM (Unbuffered DIMM) does not have a register chip between the memory controller and DRAM chips, resulting in lower latency but generally lower maximum memory capacity per channel. RDIMM (Registered DIMM) uses a register to buffer signals, supporting larger memory capacities in multi-socket servers but with slightly higher latency. The HMA82GU7DJR8N-VK is a UDIMM module.
Q3: Can I mix this memory with other DDR4 modules in my server? A: For optimal stability and performance, it is recommended to use identical memory modules (same brand, speed, capacity, rank, and type). Mixing different memory modules may work if the motherboard supports flexible memory configurations, but the system will typically run at the speed of the slowest module, and ECC functionality may be affected.
Q4: What does ECC memory do? A: ECC (Error-Correcting Code) memory contains additional parity bits that allow the memory controller to detect and correct single-bit data errors automatically. This helps prevent data corruption, system crashes, and computational errors — especially important for servers, workstations, and applications that process critical data over long uptime periods.
Q5: Does this memory come with a heat sink? A: No. The HMA82GU7DJR8N-VK is a standard bare PCB DDR4 UDIMM module without a heat spreader, as is typical for server memory designed for use in server chassis with active airflow cooling.
Q6: How many modules can I install per channel? A: The maximum number of UDIMM modules per memory channel depends on your server motherboard and CPU. Most server platforms support up to 2 UDIMMs per channel. Please refer to your server's memory configuration guide or motherboard QVL for details.
