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A-Tech

A-Tech 128GB DDR4 2933MHz ECC LRDIMM 4DRx4 Server Memory

SKU CH-17SA-QA3YR

High-capacity 128GB DDR4 2933MHz ECC load-reduced DIMM for server memory upgrades

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • High capacity for demanding server workloads with 128GB module
  • ECC load-reduced design protects data integrity in critical applications
  • DDR4 2933MHz speed delivers fast memory bandwidth for performance
  • 2V standard voltage reduces power draw per module
  • 288-pin DIMM form factor fits compatible server memory slots

128GB DDR4 2933MHz ECC LRDIMM Server Module

This 128GB DDR4 2933MHz ECC LRDIMM module targets server administrators who need high-capacity registered memory for compatible enterprise platforms. The load-reduced design helps reduce electrical load on the memory bus when populating multiple slots. It operates at the standard DDR4 voltage of 1.20V with CL21 latency. Buyers who need non-ECC UDIMMs or lower-density registered DIMMs should look elsewhere.

Verify DDR4 LRDIMM Support and Rank Compatibility

Confirm that your server motherboard and processor support DDR4 2933MHz LRDIMM modules with a 4DRx4 rank configuration before ordering. Check the system documentation for maximum supported capacity per slot and total memory population rules. The 288-pin form factor fits standard DDR4 DIMM sockets, but electrical compatibility depends on the platform memory controller. Systems limited to RDIMM or UDIMM types cannot use this module.

Single-Module Upgrade for High-Density Server Builds

This single 128GB module plugs directly into an available 288-pin DDR4 DIMM slot on a supported server board. No heat spreader is included, so airflow across the module relies on system cooling. The load-reduced architecture frees electrical headroom for additional DIMMs in multi-slot configurations. ECC functionality provides error detection and correction for data integrity in mission-critical workloads.

How it compares

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

Price $851.99
Pricier than about 78% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $6.66 per GB
Cheaper than about 57% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineMicron RAM Equivalent Replacement Memory
Model nameMTA72ASS16G72LZ-2G9, MTA72ASS16G72LZ-2G9B3
Part numberMTA72ASS16G72LZ-2G9, MTA72ASS16G72LZ-2G9B3
Total capacity128 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank4DRx4/4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Questions about this item

Does the 128GB DDR4 2933MHz ECC LRDIMM ship as a single 288-pin module or do I need to buy additional sticks?

The product is a single 128GB module in a 288-pin DDR4 LRDIMM form factor. No extra sticks are included; add more modules only if your server has free slots and supports the total capacity.

How do I choose between the Micron MTA72ASS16G72LZ-2G9 and MTA72ASS16G72LZ-2G9B3 part numbers listed?

Both part numbers refer to the same 128GB DDR4 2933MHz ECC LRDIMM specification. This A-Tech module is an equivalent replacement for either Micron part number, so you can use it regardless of which one your system requires.

What does the PC4-23400 rating mean for real-world server performance with this CL21 1.20V module?

PC4-23400 indicates a peak transfer rate of 23400 MB/s at 2933 MT/s. The CL21 latency and 1.20V operation are standard for DDR4 LRDIMMs, delivering high bandwidth for memory-intensive server workloads while maintaining signal integrity through load reduction.

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