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Green rectangular DDR4 memory module with black chips and gold contacts, no heat spreader

SAMSUNG

SAMSUNG M393A2G40EB1-CPB 16GB DDR4 2133 CL15 2Rx4 server RAM

SKU CH-469Y-HXVP3 MPN M393A2G40EB1-CPB

16 GB registered ECC DDR4 module running at 2133 MHz with CL15 latency for server workloads

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • ECC registered design protects data integrity in critical workloads
  • 16 GB capacity expands memory headroom for virtualisation
  • DDR4 2133 speed at CL15 latency delivers responsive throughput
  • 2 V operation reduces power draw per module
  • 2Rx4 dual-rank layout increases bandwidth density per channel

Server-grade DDR4 module

This 16 GB registered ECC DIMM is built for servers and workstations that require error-correcting memory. It targets system integrators and IT teams maintaining DDR4 platforms where data integrity matters more than raw speed. The module operates at 1.20 V and uses a standard 288-pin layout.

16 GB capacity with CL15 timing

The single rank 2Rx4 organisation delivers 16 GB of addressable space for virtual machines, databases or large datasets. At DDR4 2133 (PC4 17000) with CAS latency 15 it handles typical enterprise workloads, though memory-bound compute tasks will saturate bandwidth before capacity becomes the limit.

Registered design needs compatible platform

The registered buffer and ECC function require a motherboard and CPU that explicitly support registered DDR4; consumer desktop chipsets will not post with this module. No heat spreader is fitted, leaving the DIMM low-profile for dense multi-socket chassis where airflow is tight.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $121.99
Cheaper than about 61% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $7.62 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

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Specifications

Product
Brand nameSAMSUNG
Model nameM393A2G40EB1-CPB
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.23 kg
Package size171 × 127 × 13 mm

Questions about this item

Will this DDR4 2133 CL15 2Rx4 registered module run alongside my existing DDR4 2133 RDIMMs?

Mixing modules of the same DDR4 2133 speed, CL15 latency, 1.20V voltage and registered design is generally supported by server platforms; the system will operate at the slowest common settings.

How can I confirm the 16GB module is detected and ECC is active after installation?

Enter the server BIOS or UEFI at boot; the memory information screen should show 16GB per module, 2133 MT/s, CL15 timings, and ECC status as enabled or active.

Does the single pack include only the 288-pin DDR4 RDIMM or are any brackets or cables supplied?

The single pack contains only the 288-pin DDR4 SDRAM registered module; no heat spreader, brackets, cables or additional accessories are included.

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