HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory SK Hynix HMA81GR7AFR8N-VK
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HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory SK Hynix HMA81GR7AFR8N-VK
Enhance the reliability and performance of your enterprise infrastructure with the HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory SK Hynix HMA81GR7AFR8N-VK. Designed for business-critical servers and data center environments, this high-quality SK Hynix memory module delivers dependable performance, error-correcting technology, and enterprise-grade stability for demanding workloads.
Built with DDR4-2666MHz technology and ECC Registered (RDIMM) architecture, this module helps maximize server uptime while maintaining data integrity. With its single-rank design and 21.3GB/s bandwidth, it is an excellent solution for virtualization platforms, database servers, cloud infrastructure, and enterprise applications.
Key Features
- 8GB Capacity – Ideal for server upgrades, repairs, and memory expansion.
- DDR4-2666V Performance – Delivers fast and efficient memory throughput.
- PC4-21300 Bandwidth – Supports data transfer rates up to 21,300 MB/s.
- ECC Error Correction – Helps detect and correct memory errors for improved reliability.
- Registered DIMM Architecture – Optimized for enterprise-class server platforms.
- Single Rank 1Rx8 Design – Provides dependable compatibility and scalability.
- Energy Efficient – Low-voltage 1.2V operation reduces power consumption.
- SK Hynix Enterprise Quality – Designed for continuous 24/7 server operation.
Technical Specifications
- SKU: HMA81GR7AFR8N-VK-HPE
- Manufacturer: SK Hynix
- Part Number: HMA81GR7AFR8N-VK
- Capacity: 8GB (1 x 8GB)
- Memory Type: DDR4 SDRAM
- Form Factor: 288-Pin RDIMM (Registered / Buffered)
- Speed: DDR4-2666MHz
- Bus Type: PC4-21300 / PC4-2666V-R
- Data Transfer Rate: 21,300 MB/s
- Rank Configuration: 1Rx8 (Single Rank x8)
- Error Correction: ECC Registered
- CAS Latency: CL19 (19-19-19)
- Operating Voltage: 1.2V
- Cycle Time: 0.75ns
- Dimensions: Approximately 5.125" x 1.181" x 0.039"
Compatible Alternative Part Numbers
The following memory modules offer similar specifications and may be used in compatible server platforms, subject to manufacturer guidelines:
- HMA81GR7AFR8N-VK
- HMA81GR7CJR8N-VK
- M393A1G40EB2-CVF
- M393A1K43BB2-CTD
- MTA18ASF1G72PDZ-2G6E1
- MTA18ASF1G72AZ-2G6E1
- KSM26RD8/8HDI
- HPE 815100-B21
- HPE 850881-001
- HPE 852428-091
Compatible Memory Modules
This RDIMM can typically be installed alongside other DDR4 ECC Registered memory modules of similar specifications when supported by the server platform:
- 8GB DDR4-2666 ECC RDIMM (1Rx8)
- 16GB DDR4-2666 ECC RDIMM (2Rx8)
- 32GB DDR4-2666 ECC RDIMM (2Rx4)
- 64GB DDR4-2666 ECC LRDIMM
- 8GB DDR4-2400 ECC RDIMM
- 16GB DDR4-2400 ECC RDIMM
- 32GB DDR4-2933 ECC RDIMM (downclocking may occur)
- SK Hynix DDR4 ECC Registered Modules
- Samsung DDR4 ECC Registered Modules
- Micron DDR4 ECC Registered Modules
Enterprise Platform Compatibility
- HPE ProLiant Gen9 and Gen10 Servers
- Dell PowerEdge DDR4 Server Platforms
- Lenovo ThinkSystem and ThinkServer Platforms
- Cisco UCS Server Environments
- Supermicro Enterprise Systems
- Virtualization Hosts and Hyper-Converged Infrastructure
- Database and Application Servers
- Cloud and Data Center Deployments
Benefits of ECC Registered Memory
- Protects critical workloads through advanced error correction.
- Improves long-term reliability and system uptime.
- Supports larger memory configurations than standard desktop modules.
- Reduces memory controller loading through registered buffering.
- Designed for mission-critical server applications and enterprise deployments.
Important Compatibility Notes
- Requires a server or workstation that supports DDR4 ECC Registered (RDIMM) memory.
- Not compatible with desktop motherboards using standard UDIMM memory.
- Cannot be mixed with LRDIMM modules unless explicitly supported by the server manufacturer.
- Memory speed may automatically adjust to match the slowest installed DIMM.
- Always verify system compatibility and memory population guidelines before installation.
Ideal Applications
- Enterprise Server Upgrades
- Virtualization & Hypervisor Hosts
- Private Cloud Infrastructure
- Database Servers
- Data Center Deployments
- Business-Critical Applications
- Storage and Backup Systems
- High-Availability Computing Environments
The HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory SK Hynix HMA81GR7AFR8N-VK delivers dependable enterprise performance, ECC data protection, and compatibility with a wide range of professional server platforms. Whether you're expanding capacity or replacing existing memory, the HMA81GR7AFR8N-VK-HPE provides the reliability and efficiency required for modern business workloads.