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Green rectangular circuit board with black memory chips and gold edge contacts

SAMSUNG

SAMSUNG M386A4G40DM1-CRC 32GB DDR4 2400 LRDIMM server RAM

SKU CH-EY3X-5EFR4 MPN M386A4G40DM1-CRC

32 GB DDR4 2400 LRDIMM module with CL17 latency and 1.20 V operation for high-capacity server deployments

  • Capacity32GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.20V
  • Buffered/RegisteredLoad Reduced
  • 32 GB capacity supports memory-intensive workloads
  • Load Reduced DIMM architecture enables higher density per module
  • DDR4 2400 speed delivers 19200 MB/s peak bandwidth
  • CL17 latency at 1.20 V balances responsiveness and efficiency
  • 288-pin registered design ensures stable server compatibility

32 GB DDR4 2400 LRDIMM for servers

This module delivers 32 GB of DDR4 2400 memory in a 288-pin load-reduced form factor. It targets data centres and high-performance computing clusters that need maximum capacity per slot. The 1.20 V operating voltage and CL17 latency suit enterprise workloads where density matters more than raw frequency. Builders expanding virtualised hosts or cloud nodes will fit this part.

Load-reduced buffer enables four ranks

The onboard buffer chip replaces the standard register, allowing four ranks (4Rx4) on a single stick without exceeding the memory controller's electrical load limit. This design lets a server populate more slots at full speed, raising total system capacity. The module ships without a heat spreader, relying on chassis airflow. Mixing with RDIMM, ECC UDIMM or standard UDIMM is not supported.

LR-DIMM protocol is mandatory

The single specification that decides fitment is the load-reduced DIMM protocol; the system must explicitly support LR-DIMM or the module will not post. No other DDR4 form factor — registered, unbuffered or ECC unbuffered — can be combined with this stick. Verify the platform's qualified-vendor list before ordering.

Highlights

  • 32 GB capacity supports memory-intensive workloads
  • Load Reduced DIMM architecture enables higher density per module
  • DDR4 2400 speed delivers 19200 MB/s peak bandwidth
  • CL17 latency at 1.20 V balances responsiveness and efficiency
  • 288-pin registered design ensures stable server compatibility

Specifications

BrandSAMSUNG
ModelM386A4G40DM1-CRC
Capacity32GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.20V
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Shipping weight0.11 kg
Package size171 × 53 × 6 mm

Questions about this item

Will the 288-pin DDR4 module need a heat spreader added later for sustained server loads?

The module ships without a heat spreader; server chassis airflow typically handles the 1.20V DDR4 2400 thermals, so no retrofit is required.

What capacity ceiling appears first when populating 4Rx4 LRDIMM slots at DDR4 2400 speed?

Each module delivers 32GB via four ranks; the platform’s maximum rank-per-channel limit is reached before the 2400 MT/s signal integrity becomes the bottleneck.

How much power and heat does a 32GB LRDIMM draw at 1.20V during all-day operation?

At 1.20V the module runs at standard DDR4 2400 power levels; the load-reduced buffer adds minimal overhead, so heat output stays within typical server DIMM envelopes.

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