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Green rectangular circuit board with gold edge connectors and black memory chips

A-Tech

A-Tech 4GB DDR3 1866 ECC RDIMM 1Rx8 CL13 1.5V 240-Pin Server RAM

SKU CH-39DJ-D06JC

4 GB DDR3 1866 ECC registered DIMM with CL13 latency and 1.5 V operation for server upgrades

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • ECC registered design protects data integrity in servers
  • 1866 MHz DDR3 speed handles demanding workloads
  • CL13 latency at 1.5V standard voltage
  • 240-pin DIMM fits registered server slots
  • Replaces Samsung M393B5173QH0-CMA module directly

4GB DDR3 1866 ECC Registered Server Memory

This A-Tech module delivers 4GB of DDR3 1866 (PC3-14900) capacity in a 240-pin ECC RDIMM format. It operates at 1.5V with CL13 latency and uses a 1Rx8 registered configuration built with major brand chips. The module is designed as a compatible replacement for the Samsung M393B5173QH0-CMA part number.

Suits servers and workstations requiring

This module fits systems that specifically support DDR3 1866 registered DIMMs with ECC error correction. Buyers needing unbuffered UDIMM memory, higher density modules, or different voltage requirements should look elsewhere. Verify your platform's qualified vendor list before purchasing to ensure compatibility.

Registered ECC RDIMM form factor determines

The 240-pin registered DIMM design with on-board register and ECC functionality only works in motherboards wired for registered memory. Consumer desktop boards that accept only unbuffered UDIMMs cannot use this module. Confirm your system requires registered ECC DDR3 before ordering.

How it compares

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

Price $23.99
Cheaper than about 93% of the 6,523 comparable items (median $188.99).
Total capacity 4 GB
Lower than about 95% of the 6,064 comparable items (median 32 GB).
Price per GB $6.00 per GB
Cheaper than about 64% of the 6,064 comparable items (median $7.25 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.5 V

Questions about this item

How can I verify the module is running at DDR3 1866 CL13 after installation?

Check the BIOS or a tool such as CPU-Z; the memory tab should show 1866 MT/s and CAS latency 13 at 1.50 V for this registered ECC DIMM.

What ships with the module and is anything else required?

The package contains one 4 GB DDR3 1866 ECC RDIMM; no extra parts are needed if your server has a free 240-pin registered DIMM slot.

Should I choose the 1Rx8 4 GB stick or look for a different capacity?

Select this 1Rx8 4 GB module when your system requires a single-rank registered ECC DIMM at 1866 MHz; match the rank and voltage to your platform's qualified-vendor list.

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