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Green printed circuit board with black memory chips and gold edge connectors, 240-pin DDR3 UDIMM form factor

A-Tech

A-Tech 4GB DDR3 1600MHz ECC UDIMM 2Rx8 Server Memory

SKU CH-JNSK-EGJKZ

4GB DDR3 1600MHz ECC UDIMM module with CL11 latency and 1.5V operation for server upgrades

  • Capacity4GB
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection guards data integrity on critical workloads
  • 1600 MHz DDR3 speed handles demanding server tasks
  • 2Rx8 dual-rank layout maximises 4 GB module density
  • 50 V standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits standard server slots

4GB DDR3 1600 ECC UDIMM for Servers

This A-Tech module provides 4GB of DDR3 1600MHz ECC unbuffered memory for server and workstation systems. It operates at 1.5V with CL11 latency and uses a 2Rx8 rank configuration on a 240-pin DIMM form factor. The module is a compatible replacement for the Micron MT18JSF51272AZ-1G6M1 part number.

Suits ECC UDIMM slots.

This memory suits administrators upgrading or repairing servers that accept unbuffered ECC DDR3 DIMMs. Builders whose platforms require registered or load-reduced DIMMs should look at different modules, as this stick will not function in those slots. Systems limited to non-ECC memory also cannot use this module.

240-pin DDR3 DIMM form factor decides fit

The single specification that decides compatibility is the 240-pin DDR3 DIMM form factor combined with unbuffered ECC operation. Verify your motherboard documentation for DDR3 1600MHz PC3-12800 UDIMM support and 2Rx8 rank acceptance before purchasing.

Highlights

  • ECC protection guards data integrity on critical workloads
  • 1600 MHz DDR3 speed handles demanding server tasks
  • 2Rx8 dual-rank layout maximises 4 GB module density
  • 50 V standard voltage ensures broad platform compatibility
  • 240-pin UDIMM form factor fits standard server slots

Specifications

BrandA-Tech
SeriesCompatible Replacement for Micron
ModelMT18JSF51272AZ-1G6M1
Capacity4GB
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMicron Chipset
FeaturesMT18JSF51272AZ-1G6M1

Questions about this item

Does the DDR3 1600 PC3-12800 interface limit the module to CL11 timing at 1.50V?

Yes, this ECC UDIMM is specified at CL11 CAS latency and operates at the standard DDR3 voltage of 1.50V.

Will the 240-pin DIMM fit a standard server UDIMM slot keyed for 262-pin modules?

The module uses a 240-pin DIMM form factor; 262-pin is a different keying used for SO-DIMMs, so verify your board accepts 240-pin UDIMMs before ordering.

Is there a specific orientation step for installing this 2Rx8 ECC UDIMM that installers often miss?

Align the notch on the 240-pin edge connector with the slot key, press straight down until both retention clips click — forcing it backwards bends pins and prevents the ECC module from seating.

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