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Green 288-pin DDR4 server memory module with black chips, no heat spreader

SK hynix

SK hynix HMAA8GL7AMR4N-VK 64GB DDR4 2666 Load Reduced DIMM Intel S7200AP server RAM

SKU CH-BDSB-B22ZX MPN HMAA8GL7AMR4N-VK

64GB DDR4 2666 load-reduced DIMM with ECC and CL19 latency for high-density server memory configurations

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • 64GB capacity supports dense virtualization and in-memory databases
  • Load Reduced design allows more DIMMs per channel than standard RDIMMs
  • DDR4 2666 speed delivers 21300 MT/s bandwidth for demanding workloads
  • ECC protection maintains data integrity in mission-critical servers
  • 20V operation reduces power draw compared to standard registered modules

64GB DDR4 Load Reduced DIMM

This 64GB DDR4 2666 Load Reduced DIMM from SK hynix is built for Intel S7200AP servers that require ECC memory. It targets administrators expanding virtualization hosts, in-memory databases or high-performance computing clusters. The module uses a 288-pin DDR4 SDRAM form factor and operates at 1.20V with CL19 latency. It is not for standard desktops or workstations that accept only unbuffered UDIMMs.

DDR4 2666 speed and LRDIMM architecture

The DDR4 2666 interface caps transfer rates at PC4 21300, limiting peak bandwidth compared to faster DDR4 grades. Load Reduced technology removes the rank-per-channel ceiling found on standard RDIMMs, allowing more modules per channel for higher total capacity. Systems not designed for LRDIMMs cannot use this module, and mixing it with registered or unbuffered ECC DIMMs is unsupported. The 4Rx4 organisation helps density but does not overcome the bus speed limit.

288-pin installation and compatibility checks

Installation follows the standard 288-pin DDR4 slot procedure, but the server must explicitly support Load Reduced DIMMs in its memory controller and BIOS. A common error is inserting these modules into platforms qualified only for RDIMMs or UDIMMs, which prevents boot. Verify the Intel S7200AP memory population rules for 4Rx4 LRDIMMs before purchasing. No heat spreader is fitted, so airflow across the modules must be maintained by the chassis design.

Highlights

  • 64GB capacity supports dense virtualization and in-memory databases
  • Load Reduced design allows more DIMMs per channel than standard RDIMMs
  • DDR4 2666 speed delivers 21300 MT/s bandwidth for demanding workloads
  • ECC protection maintains data integrity in mission-critical servers
  • 20V operation reduces power draw compared to standard registered modules

Specifications

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

Questions about this item

Should I choose the 64GB LRDIMM or a smaller RDIMM for my Intel S7200AP server?

The 64GB Load Reduced DIMM removes channel ranking limits, letting you install more modules per channel for higher total capacity than standard RDIMMs allow.

What does the DDR4 2666 speed deliver inside a running server?

It provides PC4 21300 bandwidth at CL19 latency, giving virtualization and in-memory databases the throughput they need for heavy workloads.

How does the Load Reduced interface affect memory density limits?

LRDIMM buffering eliminates the rank restrictions of standard RDIMMs, so you can populate more DIMM slots per channel and reach densities up to 128GB per module.

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