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Green 288-pin DDR4 server RAM stick with black chips

SAMSUNG

SAMSUNG M386A8K40BM2-CTD 64GB DDR4-2666 CL19 4Rx4 LR-DIMM server RAM

SKU CH-FDKN-1NJES MPN M386A8K40BM2-CTD

64 GB DDR4-2666 load-reduced ECC server module with CL19 latency and 4Rx4 organisation

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • 64 GB capacity supports data-intensive server workloads
  • Load Reduced DIMM design enables higher memory density per slot
  • ECC protection detects and corrects single-bit memory errors
  • DDR4 2666 speed delivers 21 300 MT/s data transfer rate
  • CL19 latency at 1.20 V balances responsiveness with power efficiency

64GB DDR4-2666 LR-DIMM Server Memory

The Samsung M386A8K40BM2-CTD is a 64GB DDR4-2666 load-reduced DIMM designed for enterprise servers and workstations. It operates at PC4-21300 speed with CL19 latency and a 1.20V voltage. The module features ECC error correction and a 4Rx4 rank configuration using a 288-pin interface.

Suited For High-Capacity Registered Slots

This module suits administrators expanding memory in platforms that explicitly support LR-DIMM technology and 4Rx4 population rules. It is not suitable for systems limited to RDIMM, UDIMM or ECC UDIMM types. Buyers needing unbuffered memory or mixed-rank configurations must select a different module category.

Build Integration With LR-DIMM Platforms

Installation requires a motherboard qualified for load-reduced DIMMs and the specific electrical loading of 4Rx4 modules. The buffer chip reduces signal load on the memory controller, freeing electrical headroom for higher total system capacities. Compatibility must be verified against the vendor memory QVL before deployment.

Points forts

  • 64 GB capacity supports data-intensive server workloads
  • Load Reduced DIMM design enables higher memory density per slot
  • ECC protection detects and corrects single-bit memory errors
  • DDR4 2666 speed delivers 21 300 MT/s data transfer rate
  • CL19 latency at 1.20 V balances responsiveness with power efficiency

Caractéristiques

BrandSAMSUNG
ModelM386A8K40BM2-CTD
Capacity64GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMajor Brand Chipset
Poids d’expédition0.23 kg
Dimensions du colis178 × 51 × 13 mm

Questions sur cet article

Does my server motherboard need 288-pin DDR4 slots to use this module?

Yes, the module uses a 288-pin DDR4 interface and requires a compatible server motherboard with DDR4 memory slots.

Can I install this LR-DIMM alongside existing RDIMMs in the same server?

No, LR-DIMMs cannot be mixed with RDIMMs, ECC UDIMMs or standard UDIMMs; all slots must use the same memory type.

How do I verify the module is running at DDR4-2666 with CL19 after installation?

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

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