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Green 288-pin DDR4 DIMM module, black chips, no heat spreader

SAMSUNG

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

SKU CH-JZR3-VD8T0

16 GB registered ECC DDR4 DIMM running at 2133 MHz for server workloads

  • 16 GB capacity supports memory-intensive server workloads
  • Registered ECC design detects and corrects data errors
  • DDR4 2133 speed delivers 17000 MB/s bandwidth
  • Dual-rank 2Rx4 organisation increases memory density
  • 288-pin DIMM form factor fits standard server slots

Server memory module

This 16GB DDR4 DIMM uses registered ECC technology to maintain data integrity in multi-socket servers and workstations. The 2Rx4 organisation provides dense capacity on a single 288-pin module for qualified platforms.

Sustained workload stability

Registered buffering reduces electrical load on the memory controller during continuous operation, helping prevent signal degradation over long compute runs. ECC correction handles single-bit errors without halting the system, supporting reliable throughput for virtualisation and database tasks.

Thermals and power profile

Without a heat spreader the module relies on chassis airflow to stay within JEDEC thermal limits at the rated 2133 MT/s speed. Registered components draw slightly more power than unbuffered equivalents, but the increase is modest in typical server environments.

How it compares

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

Price $72.99
Cheaper than about 77% of the 6,523 comparable items (median $188.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How much power does this 16GB DDR4 2133 REG module draw when the server runs continuously?

The module operates at the standard DDR4 voltage; actual power draw depends on the server workload and motherboard power management, not on the stick alone.

What must my motherboard provide to use this 288-pin 2Rx4 registered DIMM?

A DDR4 RDIMM slot with registered-buffer support and a chipset that accepts 2-rank x4 modules at 2133 MT/s.

Will this PC4-17000 registered stick work in a board that only takes unbuffered UDIMMs?

No, registered and unbuffered DIMMs are electrically incompatible and cannot be mixed in the same system.

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