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Green rectangular circuit board with gold edge contacts and black memory chips, no heat spreader

SK hynix

SK hynix HMAA8GL7AMR4N-VK 64GB DDR4-2666 ECC LRDIMM server RAM

SKU CH-AS2A-H3E35 MPN HMAA8GL7AMR4N-VK

64 GB DDR4-2666 ECC load-reduced DIMM that overcomes standard RDIMM rank limits to fit more modules per channel

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • 64 GB capacity supports dense virtualization and in-memory databases
  • Load Reduced design removes channel ranking limits for higher DIMM counts
  • ECC protection detects and corrects data errors for server reliability
  • DDR4-2666 CL19 at 1.20 V delivers bandwidth with efficiency
  • 288-pin 4Rx4 module built with 16 Gb components for maximum density

High-density DDR4 LRDIMM for servers

This 64GB DDR4-2666 ECC Load Reduced DIMM targets administrators who need maximum capacity per slot. It fits 288-pin DDR4 server platforms that support LRDIMM memory and require registered error-correcting modules. The module operates at 1.20V with a CAS latency of 19.

Capacity headroom and channel limits

Each stick delivers 64GB using a 4Rx4 organisation, letting you populate more DIMMs per channel than standard RDIMMs allow. The Load Reduced design removes the rank bottleneck so dense configurations can reach higher total memory without dropping speed. Systems that only accept UDIMMs or standard RDIMMs cannot use these modules.

Features that change deployment

The LRDIMM architecture provides more memory bandwidth and better energy efficiency than standard RDIMMs at the same 2666 MT/s data rate. This enables virtualization, high-performance computing and in-memory database workloads to scale further within the same chassis. No heat spreader is included, so airflow planning remains the integrator's responsibility.

Pontos fortes

  • 64 GB capacity supports dense virtualization and in-memory databases
  • Load Reduced design removes channel ranking limits for higher DIMM counts
  • ECC protection detects and corrects data errors for server reliability
  • DDR4-2666 CL19 at 1.20 V delivers bandwidth with efficiency
  • 288-pin 4Rx4 module built with 16 Gb components for maximum density

Especificações

BrandSK hynix
ModelHMAA8GL7AMR4N-VK
Capacity64GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesEliminate channel ranking limitations associated with standard RDIMMs
Enable more installed DIMMs per channel for greater memory density
More memory bandwidth than standard RDIMMs
More energy efficient than standard RDIMMs
100% component and module tested to mission-critical server standards
Compatible with OEM servers and warranties
Optimized for Intel Xeon processor product families

Perguntas sobre este artigo

Will this 64GB DDR4-2666 LRDIMM work alongside my existing RDIMMs in a Supermicro GPU blade?

No — ECC registered DIMMs and ECC UDIMMs cannot be mixed; all existing UDIMMs must be removed before installing these load-reduced modules.

How can I verify the module is running at its rated DDR4-2666 CL19 speed after installation?

Check the BIOS memory information or use a tool such as dmidecode to confirm the speed shows 2666 MT/s and CAS latency 19.

Does the package include a heat spreader or any extra accessories I need to buy separately?

The module has no heat spreader and ships as the bare DIMM only; no cables, brackets or additional parts are included.

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