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Green circuit board DDR3 ECC RDIMM 240-pin server memory module

A-Tech

A-Tech 4GB DDR3 1866MHz ECC RDIMM 2Rx8 Server Memory

SKU CH-Y7CX-1MHAM

4GB DDR3 1866MHz ECC registered DIMM 2Rx8 replacement for Micron MT18JSF51272PDZ-1G9K1 with CL13 latency and 1.5V operation

  • Total capacity4 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMicron Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption in servers
  • Registered design reduces electrical load on memory controller
  • DDR3 1866 MHz speed supports high-throughput workloads
  • 2Rx8 dual-rank organisation increases memory density
  • 50 V standard voltage ensures broad platform compatibility

4GB DDR3 1866MHz ECC RDIMM for servers

This 4GB registered DIMM operates at DDR3 1866MHz with a CAS latency of 13 and standard 1.50V voltage. It uses a 2Rx8 organisation and Micron chipset on a 240-pin form factor. The module is built as a compatible replacement for the Micron MT18JSF51272PDZ-1G9K1 part number.

Replaces Micron MT18JSF51272PDZ-1G9K1 in DDR3

It serves as a direct drop-in when a system requires that specific Micron part number and the platform supports DDR3 1866MHz registered ECC memory. The upgrade is worthwhile when the server board accepts PC3-14900 RDIMMs and the workload benefits from ECC error correction. Systems limited to lower DDR3 speeds or unbuffered DIMMs cannot use this module.

DDR3 1866MHz registered ECC limits

The DDR3 interface tops out at 1866MHz here, so bandwidth is capped by that generation's signalling rate. Registered buffering adds a clock cycle of latency but enables the higher capacities and signal integrity that server chipsets demand. ECC function only works on platforms with a memory controller that supports error correction; consumer boards without ECC support will ignore the parity bits.

How it compares

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

Price $17.99
Cheaper than about 96% 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 $4.50 per GB
Cheaper than about 77% 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
Product lineCompatible Replacement for Micron
Model nameMT18JSF51272PDZ-1G9K1
Total capacity4 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMicron Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Power
Rated voltage1.5 V

Questions about this item

Does this DDR3 ECC RDIMM use the standard 240-pin DIMM form factor for server boards?

Yes, it is a 240-pin DDR3 DIMM designed for registered ECC server memory slots.

What is the correct way to seat this registered DIMM so the ECC function initialises properly?

Align the notch with the slot key, press firmly until both retention clips click, then verify the module height matches adjacent DIMMs.

Will the Micron chipset on this module require a firmware update or replacement after a certain period?

No firmware updates are needed; the Micron chipset is validated for continuous server operation at 1.5 V and CL13 latency.

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