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Green 240-pin DDR3 UDIMM with black memory chips and a white label

A-Tech

A-Tech 4GB DDR3 1866 ECC UDIMM 1Rx8 240-Pin Server Memory

SKU CH-EZ5R-WZ4QD

4GB DDR3 1866 ECC unbuffered UDIMM with CL13 latency and 1.5V operation

  • Capacity4GB
  • SpeedDDR3 1866 (PC3 14900)
  • CAS LatencyCL13
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection guards data integrity with built-in error correction
  • 1866 MHz DDR3 speed accelerates server workloads at PC3-14900 bandwidth
  • 50 V standard voltage keeps power draw predictable
  • 1Rx8 single-rank layout simplifies memory configuration
  • 240-pin UDIMM form factor fits compatible server boards

4GB DDR3 1866 ECC UDIMM for servers

This 4GB DDR3 1866 ECC UDIMM module targets servers and workstations that require error-correcting unbuffered memory. It replaces Micron MT9JSF51272AZ-1G9E2 and MT9JSF51272AZ-1G9P1 parts in compatible platforms. The single-rank 1Rx8 organisation suits systems that populate multiple slots per channel.

Installation notes for 240-pin DDR3

The module uses the standard 240-pin DDR3 DIMM keying and installs like any unbuffered DDR3 stick. Align the notch, press evenly until the latches click, and verify the BIOS reports 1866 MT/s at CL13. Mismatched ranks or mixing registered and unbuffered DIMMS are the usual reasons a system will not post.

4GB capacity and DDR3 1866 headroom

Four gigabytes handles light virtualisation, file-serving and legacy application workloads without paging. Heavy databases, large VM counts or memory-intensive analytics will exhaust the module quickly. The 1.50V DDR3 standard voltage limits overclocking headroom, so the rated 1866 speed is the practical ceiling.

Highlights

  • ECC protection guards data integrity with built-in error correction
  • 1866 MHz DDR3 speed accelerates server workloads at PC3-14900 bandwidth
  • 50 V standard voltage keeps power draw predictable
  • 1Rx8 single-rank layout simplifies memory configuration
  • 240-pin UDIMM form factor fits compatible server boards

Specifications

BrandA-Tech
SeriesCompatible Replacement for Micron
ModelMT9JSF51272AZ-1G9E2, MT9JSF51272AZ-1G9P1
Capacity4GB
SpeedDDR3 1866 (PC3 14900)
CAS LatencyCL13
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
ChipsetMicron Chipset
FeaturesMT9JSF51272AZ-1G9E2, MT9JSF51272AZ-1G9P1

Questions about this item

How can I confirm the module is running at 1866 MHz with ECC active after installation?

Check the BIOS memory information screen; it should show DDR3 1866 speed, 1.50 V voltage, ECC enabled and the correct 4 GB capacity.

What comes in the package and do I need any extra parts to install it?

The box contains one 4 GB 240-pin DDR3 UDIMM; no cables, brackets or additional components are required for installation.

Which version should I choose if my server lists Micron MT9JSF51272AZ-1G9E2 or MT9JSF51272AZ-1G9P1?

This module is a compatible replacement for both Micron part numbers, so either listing points to the same 4 GB DDR3 1866 ECC UDIMM.

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