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Green bare circuit board 288-pin DDR5 RDIMM module with black DRAM chips no heat spreader

A-Tech

A-Tech 128GB DDR5 6400 ECC RDIMM 2Rx4 server RAM

SKU CH-813W-08JX3

128 GB DDR5 registered ECC server memory running at 6400 MT/s with 2Rx4 organisation and 1.10 V operation

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor Brand Chipset
  • CAS latency32
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity handles heavy workloads
  • DDR5 6400 speed moves data quickly
  • ECC RDIMM corrects errors automatically
  • 2Rx4 rank fits dense server configs
  • 10 V operation meets DDR5 standard

128GB DDR5 6400 ECC RDIMM Module

This 128GB DDR5 6400 registered DIMM delivers error-correcting memory for servers and workstations that require data integrity. The module operates at 1.10V with CAS latency 32 and uses a 288-pin form factor. It is built as a direct replacement for specific Hynix part numbers.

Suits registered-memory platforms needing maximum

Buyers whose systems accept only unbuffered UDIMMs or non-ECC modules cannot use this product. Platforms limited to lower DDR5 speeds or smaller maximum module sizes should verify compatibility before purchase. The single-module design also means dual-channel bandwidth requires a second identical stick.

128GB capacity with DDR5 6400 headroom

The 128GB density handles large virtualisation workloads, in-memory databases and heavy multi-user applications comfortably. Workloads that exceed per-module capacity limits or demand higher frequencies than 6400 will require additional modules or a platform supporting faster memory.

How it compares

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

Price $3,655.99
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 32
Lower than about 74% of the 439 comparable items (median 40).
Price per GB $28.56 per GB
Pricier than about 90% 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 HMCT04MHBRC HMCT04MHBRC470N HMCT04MHBRC548N HMCT04MHBRC552N HMCT04MHBRC554N
Model nameA-Tech 128 GB DDR5-6400 ECC RDIMM Server RAM Module
Total capacity128 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency32
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Does my motherboard need DDR5 RDIMM slots and ECC support to run this 128GB DDR5 6400 2Rx4 module?

Yes, the module requires a 288-pin DDR5 RDIMM slot and a platform that enables ECC registered memory at 1.10V.

Can I install this 128GB DDR5 6400 2Rx4 ECC RDIMM alongside existing DDR5 RDIMMs of different capacities in my server?

Mixed-capacity DDR5 RDIMMs can work if the motherboard and CPU support the total population and the memory controller trains all ranks at 6400 MT/s with CL32.

How do I verify this 128GB DDR5 6400 2Rx4 ECC RDIMM is operating at its rated speed and ECC function after installation?

Check the BIOS memory information or OS tools such as dmidecode to confirm 6400 MT/s, CL32, 1.10V, registered ECC mode and 2Rx4 organisation.

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