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Green 240-pin DDR3 memory module with black chips

SAMSUNG

SAMSUNG M391B1G73QH0-CMA 8GB DDR3-1866 ECC CL13 Server Memory

SKU CH-AWHM-E4E50

8GB DDR3-1866 ECC server memory module with CL13 latency and 1.5V operation

  • Total capacity8 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL13
  • Product type240-Pin DDR3 SDRAM
  • ECC protection safeguards data integrity with built-in error correction
  • 1866 MHz DDR3 speed delivers responsive server performance
  • 8 GB capacity supports demanding multi-tasking workloads
  • 240-pin DDR3 form factor fits standard server DIMM slots
  • Low 1.5 V operation reduces power draw and heat

8GB DDR3-1866 ECC server module

This 8 GB DDR3 module runs at 1866 MHz with a CAS latency of 13 and operates at 1.5 V. It uses a 240-pin form factor and includes error-correcting code for data integrity. The dual-rank design uses Samsung chips in a 512M x 8 configuration. It is built for servers and workstations that require registered ECC memory.

ECC and dual-rank layout

Error-correcting code detects and corrects single-bit errors to prevent data corruption in critical workloads. The dual-rank organisation allows the memory controller to interleave accesses across two 512M x 8 ranks on a single module. No additional software or accessories are included with the module.

240-pin DDR3 build

The module uses a standard 240-pin DDR3 PCB with Samsung ICs mounted on both sides. Gold edge contacts resist oxidation during repeated seating cycles. The low-profile height fits dense server chassis without blocking adjacent slots or airflow. Unbuffered signalling suits platforms that do not require registered modules.

How it compares

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

Price $22.99
Cheaper than about 93% 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 $2.87 per GB
Cheaper than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Total capacity8 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL13

Questions about this item

Will the Samsung M391B1G73QH0-CMA modules need any maintenance or replacement parts over time?

No, DDR3 ECC server memory has no moving parts or serviceable components; once installed correctly it runs until a cell fails, at which point the entire 8 GB stick is replaced.

What limit appears first when the memory runs at 1866 MHz continuously in a server?

The CL13 latency at 1.5 V sets the timing ceiling; sustained throughput is bounded by the 1866 MT/s data rate and the dual-rank 512M x 8 organisation.

How much heat and power does an 8 GB DDR3-1866 ECC module produce under all-day load?

Each stick draws 1.5 V and is rated for standard DDR3 power envelopes; with no active cooling on the module itself, case airflow handles the resulting heat.

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