Keep your HPE server infrastructure running at peak efficiency with the HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory Hynix 850879-001 840755-091 815097-B21. Built using enterprise-grade SK Hynix memory technology and qualified for HPE server environments, this 8GB DDR4 Registered ECC module provides the reliability, performance, and stability required for virtualization, database applications, cloud computing, and business-critical workloads.
Featuring DDR4-2666MHz performance, ECC error correction, and Registered DIMM architecture, this memory module helps improve system integrity while supporting higher memory densities in enterprise server deployments. Its single-rank design offers an efficient solution for system upgrades, capacity expansion, and replacement memory requirements.
Key Features
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8GB DDR4 Capacity – Ideal for server upgrades, maintenance, and memory expansion projects.
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DDR4-2666V Speed – Provides reliable data processing performance at 2666MHz.
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PC4-21300 Bandwidth – Delivers up to 21.3GB/s theoretical throughput.
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ECC Registered Technology – Enhances system stability by detecting and correcting memory errors.
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Single Rank 1Rx8 Design – Optimized for compatibility with enterprise-class servers.
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288-Pin RDIMM Form Factor – Designed for HPE and other DDR4 RDIMM-compatible platforms.
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Low Voltage Operation – Energy-efficient 1.2V design reduces power consumption.
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Enterprise-Grade Reliability – Built for continuous 24/7 operation in demanding environments.
Technical Specifications
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SKU: HMA81GR7JJR8N-VK-HPE
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Manufacturer: SK Hynix (HPE Branded)
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Manufacturer Part Number: HMA81GR7JJR8N-VK
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HPE Spare Number: 840755-091
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HPE Option Kit: 815097-B21
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Additional HPE Part Number: 850879-001
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Capacity: 8GB
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Memory Type: DDR4 SDRAM
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Form Factor: 288-Pin RDIMM (Registered DIMM)
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Speed: DDR4-2666V / PC4-21300
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Bus Type: PC4-2666V-R
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Rank Configuration: 1Rx8 (Single Rank x8)
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Error Correction: Registered ECC
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CAS Latency: CL19
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Voltage: 1.2V
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Cycle Time: 0.75ns
Compatible Alternative Part Numbers
- HMA81GR7JJR8N-VK
- HMA81GR7AFR8N-VK
- 850879-001
- 840755-091
- 815097-B21
- 815100-B21
- 852428-091
- M393A1G40DB0-CPB
- M393A1G40EB2-CVF
- MTA18ASF1G72PDZ-2G6E1
- KSM26RD8/8HDI
Compatible Memory Modules
This module can typically be deployed alongside other HPE-qualified DDR4 ECC RDIMM modules when installed according to system population guidelines:
- 8GB DDR4-2666 1Rx8 ECC RDIMM
- 16GB DDR4-2666 2Rx8 ECC RDIMM
- 32GB DDR4-2666 2Rx4 ECC RDIMM
- 64GB DDR4-2666 LRDIMM
- 8GB DDR4-2400 ECC RDIMM
- 16GB DDR4-2400 ECC RDIMM
- 32GB DDR4-2933 ECC RDIMM (Speed may downclock)
- SK Hynix DDR4 Registered ECC Modules
- Samsung DDR4 Registered ECC Modules
- Micron DDR4 Registered ECC Modules
Compatible Server Platforms
- HPE ProLiant Gen9 Servers
- HPE ProLiant Gen10 Servers
- HPE Apollo Systems
- HPE Synergy Compute Platforms
- Dell PowerEdge DDR4 RDIMM-Compatible Servers
- Lenovo ThinkSystem Enterprise Platforms
- Cisco UCS Servers Supporting DDR4 RDIMMs
- Supermicro Enterprise Server Platforms
Benefits of Registered ECC Memory
- Protects critical applications through advanced ECC error correction.
- Reduces the risk of data corruption and system instability.
- Improves memory signal integrity in multi-DIMM server configurations.
- Supports enterprise virtualization, cloud, and database workloads.
- Designed for high-availability computing environments requiring maximum uptime.
Important Compatibility Notes
- Requires a server or workstation that supports DDR4 ECC Registered (RDIMM) memory.
- Not compatible with desktop PCs, gaming systems, or laptops.
- Cannot be mixed with UDIMM memory modules.
- Mixing different memory speeds may cause all installed modules to operate at the speed of the slowest DIMM.
- Always verify your server's memory population and compatibility requirements before installation.
Ideal Applications
- Enterprise Server Upgrades
- Virtualization Platforms
- Database Servers
- Business-Critical Applications
- Cloud Infrastructure
- Storage and Backup Systems
- Data Center Deployments
- High-Availability Enterprise Environments
The HPE 8GB 1Rx8 DDR4-2666V PC4-21300 ECC Registered Memory Hynix 850879-001 840755-091 815097-B21 delivers dependable enterprise performance, ECC-protected data integrity, and broad compatibility with HPE server platforms. Backed by proven SK Hynix technology and HPE qualification standards, the HMA81GR7JJR8N-VK-HPE is an excellent choice for maintaining and expanding mission-critical server infrastructure.
