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Green rectangular circuit board with gold contacts, black memory chips on both sides, no heat spreader, 288-pin DDR5 RDIMM form factor

A-Tech

A-Tech 128GB DDR5 4800 ECC RDIMM for Hynix HMCT04MEERA131N Server RAM

SKU CH-MK3Q-DJAPZ

A 128GB DDR5 4800 ECC RDIMM module with 4Rx4 rank and 1.10V operation for Hynix HMCT04MEERA131N server upgrades

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity handles large workloads
  • DDR5 4800 MHz speed moves data fast
  • ECC RDIMM registered design protects data integrity
  • 10 V voltage reduces power draw
  • 288-pin DDR5 form factor fits server slots

128GB DDR5-4800 ECC RDIMM Server Module

This 128GB DDR5-4800 registered ECC module targets server and workstation operators who need high-density memory for virtualisation, database or compute workloads. The 4Rx4 3DS organisation packs four ranks into a single 288-pin DIMM, maximising capacity per slot. Major-brand DRAM ICs and factory testing aim to deliver dependable operation in qualified platforms.

Check DDR5 RDIMM Support and Slot Population Rules

Before ordering, confirm that your motherboard or server chassis accepts DDR5 registered DIMMs and that the memory controller supports 4Rx4 modules at the desired speed. Consult the vendor manual for approved population sequences, maximum modules per channel and any BIOS version requirements, because unsupported rank configurations can prevent boot or reduce performance.

Replaces Hynix HMCT04MEERA131N

This module serves as a direct replacement for Hynix HMCT04MEERA131N, HMCT04AEERA and HMCT04AEERA131N parts. The upgrade is worthwhile when your qualified system documentation lists these part numbers and you need to expand memory capacity or replace a failed unit without changing the platform.

How it compares

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

Price $3,511.99
Pricier than about 90% 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).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $27.44 per GB
Pricier than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix HMCT04MEERA131N HMCT04AEERA HMCT04AEERA131N
Model nameA-Tech 128 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity128 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Does the 128GB DDR5 4800 ECC RDIMM come as a single module or a kit?

The product is a single 128GB module (1x 128GB) in a 288-pin DDR5 RDIMM form factor. No additional modules are included.

How does the 4Rx4 rank configuration affect capacity planning?

Each module provides four logical ranks (4Rx4) using 3DS/TSV stacking, so one 128GB stick delivers the density that would otherwise require multiple lower-rank modules.

What does the 4800MHz speed mean for actual server throughput?

The module runs at DDR5 4800 (PC5-38400) with CL40 latency at 1.1V, delivering the standard JEDEC data rate for DDR5-4800 registered ECC server memory.

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