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

SAMSUNG

SAMSUNG M393A1G40EB1-CPB 8GB DDR4 2133 CL15 1Rx4 RegECC server RAM

SKU CH-HN25-462JB MPN M393A1G40EB1-CPB

8 GB registered ECC DDR4 module running at 2133 MHz with CL15 latency and 1.2 V operation

  • Total capacity8 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Error-correcting code protects data integrity
  • Registered buffering reduces electrical load on the memory controller
  • CL15 latency delivers responsive access at DDR4 2133
  • 2 V operation lowers power draw in dense server configs
  • Single-rank 1Rx4 layout enables flexible population across channels

8GB Registered ECC DDR4 module

This 8GB DDR4 module operates at 2133 MT/s with CL15 latency and 1.20V voltage. It uses a registered design with ECC for data integrity in server workloads. The single-rank 1Rx4 organisation fits standard 288-pin DIMM slots. No heat spreader is included.

Thermals and power draw

The module runs at the standard DDR4 voltage of 1.20V, keeping power draw low for dense server configurations. Without a heat spreader, it relies on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained operation.

Build integration

The 288-pin form factor installs directly into compatible registered DDR4 slots. ECC and registered signalling require a platform that supports both features. The low-profile design without a spreader eases fitment in tight multi-DIMM arrangements. Buyers needing higher capacities or unbuffered memory should look elsewhere.

How it compares

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

Price $68.99
Cheaper than about 78% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $8.62 per GB
Pricier than about 61% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameSAMSUNG
Model nameM393A1G40EB1-CPB
Total capacity8 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.23 kg
Package size159 × 51 × 13 mm

Questions about this item

How do I install this 288-pin DDR4 module and what step is often missed?

Align the notch on the gold edge connector with the key in the server DIMM slot, press down evenly until both retention clips click, then verify the BIOS recognises the registered ECC configuration at 1.20 V.

What maintenance or replacement will this 1Rx4 registered ECC module need later?

No routine maintenance is required; replace the module only if system diagnostics report correctable ECC errors that exceed the platform threshold or if a DIMM slot fails.

What limit appears first under sustained load with this CL15 2133 MT/s kit?

The JEDEC-rated 1.20 V operating voltage and CL15 latency define the thermal and timing envelope; sustained writes will hit the rated speed ceiling before any voltage headroom is reached.

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