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Green 288-pin DDR4 LRDIMM module with black memory chips and silver edge connectors

A-Tech

A-Tech 128GB DDR4 2933MHz ECC LRDIMM 2S4Rx4 Hynix HMABAGL7C4R4N-WR Server Memory

SKU CH-JAYS-7K3CC

High-capacity 128GB DDR4 2933MHz ECC LRDIMM module with 1.2V operation for server workloads

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • 128 GB capacity enables large-scale virtualisation and in-memory databases
  • 2933 MHz DDR4 speed delivers high throughput for demanding workloads
  • ECC LRDIMM with 8Rx4 3DS/TSV architecture maintains data integrity at extreme density
  • CL21 latency at 1.2 V balances responsiveness with power efficiency
  • 288-pin DDR4 DIMM form factor fits standard server memory slots

High-density server memory

This 128GB DDR4 2933MHz ECC LRDIMM module targets administrators who need maximum capacity per slot in registered server platforms. The load-reduced design lowers electrical load on the memory controller, allowing dense population across multiple channels. It serves as a compatible replacement for the Hynix HMABAGL7C4R4N-WR part number. Builders requiring non-ECC or unbuffered memory should look elsewhere.

288-pin LRDIMM construction

The module uses a 288-pin DDR4 DIMM form factor operating at 1.20V with CL21 latency. Load-reduced buffering and an 8Rx4 3DS/TSV rank structure enable the 128GB capacity while maintaining signal integrity in heavily populated systems. ECC functionality provides error detection and correction for data-critical workloads. Systems that do not support LRDIMM or 3DS stacking cannot use this module.

Upgrades from lower-density RDIMMs

Replacing standard registered DIMMs with this 128GB LRDIMM increases per-slot capacity, reducing the total module count needed for large memory footprints. The jump is worthwhile when the platform supports load-reduced memory and the application benefits from fewer populated slots. Buyers needing higher speeds or lower latencies than 2933MHz CL21 will not find them here.

How it compares

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

Price $950.99
Pricier than about 80% 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 $7.43 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix
Model nameHMABAGL7C4R4N-WR
Total capacity128 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL21
ECC supportYes
Buffer typeLoad Reduced
Memory rank2S4Rx4 (8Rx4)
Power
Rated voltage1.2 V

Questions about this item

Does the DDR4 2933 interface cap real-world throughput at the PC4-23400 rating?

Yes, the DDR4 2933 interface is rated PC4-23400, which sets the maximum theoretical bandwidth for this module.

Will the 262-pin DIMM form factor fit a standard 288-pin DDR4 server slot?

No, this module uses a 262-pin DIMM form factor and will not fit a standard 288-pin DDR4 server memory slot.

Is there a specific orientation notch to align when installing this ECC LRDIMM?

Yes, align the module notch with the slot key, press firmly until the retention clips click, and verify the 1.2V voltage matches your platform.

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