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A green 288-pin DDR4 LRDIMM module with black memory chips, no heat spreader

A-Tech

A-Tech 128GB DDR4 2933 ECC LRDIMM 2S4Rx4 288-Pin Server RAM

SKU CH-P8B7-Z8HB7

128 GB DDR4 2933 ECC LRDIMM module with 2S4Rx4 octal-rank 3DS chips, CL21 latency and 1.2 V operation

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 128GB

  • 128 GB capacity expands server memory headroom for large datasets
  • DDR4 2933 MHz speed accelerates data throughput in compatible systems
  • ECC load-reduced design corrects errors while lowering electrical load on the memory bus
  • Octal-rank 3DS stacking fits maximum density into a single 288-pin module
  • 2 V operation matches standard DDR4 voltage for efficient power use

Single 128GB module for DDR4 servers

This single 128GB module is built for DDR4 servers and workstations that require ECC load-reduced memory. It will not work in desktop or laptop systems. The octal-rank 3DS design lets a single DIMM deliver very high capacity for memory-intensive server workloads.

Sustained load with ECC load-reduced design

The load-reduced architecture reduces electrical loading on the memory bus, helping the module maintain stability during continuous server workloads. ECC corrects single-bit errors in real time, protecting data integrity across long-running tasks. CL21 latency at 2933 MHz supports consistent throughput under sustained demand.

Install in validated server slots only

Installation follows standard 288-pin DDR4 DIMM seating, but the system must explicitly support 128GB ECC LRDIMM modules with 2S4Rx4 3DS organisation. Compatibility fails when the platform does not qualify this rank and density combination. Consult the system manual for correct channel population rules before fitting the module.

How it compares

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

Price $875.99
Pricier than about 79% 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 $6.84 per GB
Cheaper than about 55% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Server Memory RAM
Model nameA-Tech 128 GB 2S4Rx4 PC4-2933Y-L
Part numberAT128G1D4D2933LO4N12 V
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 rank2S4Rx4 (8Rx4 3DS/TSV)
Kit configurationSingle Module
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

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Questions about this item

How much power does the 128GB DDR4 2933 module draw at its 1.20V rating?

The module operates at the standard DDR4 voltage of 1.20V. Actual power draw depends on server workload and memory controller utilisation, but the low-voltage design helps limit heat output in dense configurations.

What server memory slots and channel population rules must I check before installing this 288-pin LRDIMM?

Your server must support DDR4 ECC Load Reduced DIMMs with 2S4Rx4 octal-rank 3DS/TSV organisation. Consult the system manual for qualified vendor lists, maximum capacity per slot and required channel population order.

Can I mix this 2933 MT/s octal-rank LRDIMM with existing lower-rank DDR4 RDIMMs in the same server?

Mixing Load Reduced and standard Registered DIMMs is not supported. All populated slots must use identical LRDIMM rank structure and speed; otherwise the memory controller will disable the mismatched channels.

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