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

SAMSUNG

SAMSUNG M393A1G40DB0-CPB 8GB DDR4 2133 ECC Registered CL15 1.2V 288-Pin server RAM

SKU CH-Y3SW-TMMF8 MPN M393A1G40DB0-CPB

8GB DDR4 2133 ECC registered server memory, CL15 at 1.2V on a 288-pin module

  • Capacity8GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2133 (PC4 17000)
  • CAS LatencyCL15
  • Voltage1.20V
  • ECCYes
  • ECC protection guards data integrity in critical workloads
  • Registered design stabilises signal quality for dense server configurations
  • Single-rank layout simplifies memory channel population
  • Low 1.20V operation reduces power draw and heat
  • 2133 MT/s DDR4 speed meets PC4-17000 bandwidth needs

Server-grade DDR4 registered ECC

This 8 GB DDR4 module runs at 2133 MT/s with CL15 latency and 1.20 V operation. It uses a 288-pin registered DIMM layout with single-rank 1Rx4 organisation. ECC and registered buffering provide the error correction and signal integrity required by server platforms. The module has no heat spreader.

Replaces non-ECC or unbuffered DIMMs

Systems that currently run standard unbuffered memory without error correction can upgrade to this module when data integrity becomes a priority. The jump is worth it for workloads that cannot tolerate silent corruption, such as databases, virtualization hosts or long-running compute jobs. Compatibility requires a platform that supports registered ECC DDR4.

Single 8 GB rank for dense configurations

The 1Rx4 arrangement keeps electrical loading low, allowing many modules to populate a server board simultaneously. This capacity comfortably handles typical virtual-machine densities and moderate database buffers. Workloads needing larger per-socket memory footprints will require higher-capacity registered modules.

Highlights

  • ECC protection guards data integrity in critical workloads
  • Registered design stabilises signal quality for dense server configurations
  • Single-rank layout simplifies memory channel population
  • Low 1.20V operation reduces power draw and heat
  • 2133 MT/s DDR4 speed meets PC4-17000 bandwidth needs

Specifications

BrandSAMSUNG
ModelM393A1G40DB0-CPB
Capacity8GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2133 (PC4 17000)
CAS LatencyCL15
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
Features1Rx4
Shipping weight0.23 kg
Package size178 × 51 × 13 mm

Questions about this item

Does the 288-pin DDR4 DIMM fit a standard server motherboard slot?

The module uses the 288-pin DDR4 form factor, which matches the standard registered DIMM slot found on compatible server motherboards.

What is the correct way to seat this registered ECC module, and what step is often missed?

Align the notch with the slot key, press firmly until both retention clips click, and verify the system recognises the registered buffer at POST — skipping the clip check is the common error.

When should this 8 GB DDR4 2133 CL15 stick be replaced in a production server?

Replace it if memory diagnostics report correctable ECC errors that increase over time, or when a firmware update requires a higher speed grade than 2133 MT/s.

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