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

A-Tech

A-Tech 128GB DDR4 2666MHz PC4-21300 ECC LRDIMM 288-Pin Server Memory

SKU CH-Q7EC-08JN2

128GB DDR4 2666MHz ECC LRDIMM module with CL15 latency and 1.2V operation for server memory expansion

  • Capacity128GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL15
  • Voltage1.20V
  • ECCYes
  • 128GB capacity enables large virtualised workloads
  • DDR4 2666MHz speed delivers high data throughput
  • ECC load-reduced design corrects errors while lowering electrical load
  • CL15 latency provides responsive server performance
  • 20V operation reduces power draw per module

128GB DDR4 ECC LRDIMM server upgrade

This 128GB DDR4 2666MHz ECC Load Reduced DIMM is built for servers that require registered memory with error correction. It replaces Micron part numbers MTA144ASQ16G72LSZ-2S6, MTA144ASQ16G72LSZ-2S6E1 and MTA144ASQ16G72LSZ-2S6G1 in compatible systems. The module operates at 1.2V with a CL15 latency rating.

Sustained load behaviour with 8Rx4 3DS stacking

The 8Rx4 3DS/TSV organisation spreads addressing across sixteen logical ranks to keep the memory controller busy during long-running workloads. Load Reduced buffering reduces electrical loading on the bus so signal integrity holds steady when all ranks are active. ECC corrects single-bit errors on the fly without halting the server.

Verify LRDIMM support and slot population rules

Confirm the motherboard and CPU memory controller list LRDIMM as a supported module type before ordering. Check the maximum capacity per slot and the allowed rank population for your specific server model. Ensure the firmware revision recognises 128GB 2S4Rx4 modules at 2666MHz.

Highlights

  • 128GB capacity enables large virtualised workloads
  • DDR4 2666MHz speed delivers high data throughput
  • ECC load-reduced design corrects errors while lowering electrical load
  • CL15 latency provides responsive server performance
  • 20V operation reduces power draw per module

Specifications

BrandA-Tech
SeriesMicron RAM Equivalent Replacement Memory
ModelMTA144ASQ16G72LSZ-2S6, MTA144ASQ16G72LSZ-2S6E1, MTA144ASQ16G72LSZ-2S6G1
Part NumberMTA144ASQ16G72LSZ-2S6, MTA144ASQ16G72LSZ-2S6E1, MTA144ASQ16G72LSZ-2S6G1
Capacity128GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL15
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank2S4Rx4 (8Rx4)
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesEquivalent Replacement for Micron MTA144ASQ16G72LSZ-2S6, MTA144ASQ16G72LSZ-2S6E1, MTA144ASQ16G72LSZ-2S6G1

Questions about this item

How much power does the 1.20V 128GB DDR4 2666MHz LRDIMM draw when the server runs all day?

The module operates at the standard DDR4 1.20V voltage; actual power draw depends on the server's memory controller and workload, so consult the platform documentation for precise figures.

What must my motherboard already support to use this 288-pin ECC LRDIMM?

The board needs DDR4 LRDIMM slots, a memory controller that handles 128GB 2S4Rx4 (8Rx4) modules at 2666MHz, and BIOS/firmware that enables ECC and load-reduced operation.

Will this 128GB PC4-21300 LRDIMM work alongside my existing 16GB DDR4 RDIMMs in the same server?

Mixing LRDIMM and RDIMM types is not supported on most platforms; the system typically requires all slots to use the same registered or load-reduced technology for stable operation.

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