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Green bare circuit board DDR5 RDIMM module with black memory chips

A-Tech

A-Tech 64GB DDR5 6400 ECC RDIMM 2Rx4 Server RAM

SKU CH-68CX-2C70R

64GB DDR5 6400 ECC registered server memory module with 2Rx4 organisation and CAS latency 32

  • Total capacity64 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMicron Chipset
  • CAS latency32
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • High capacity 64 GB module handles demanding server workloads
  • DDR5 6400 MHz speed delivers fast data transfer rates
  • ECC RDIMM with registered design ensures data integrity
  • 2Rx4 dual-rank architecture optimises memory density
  • Standard 1.10 V DDR5 voltage for efficient power use

64GB DDR5 6400 ECC RDIMM Server Module

This 64GB DDR5 module operates at 6400MHz with PC5-51200 bandwidth and CL32 latency. It uses a 288-pin registered DIMM form factor with 2Rx4 organisation and on-die ECC for data integrity. The module runs at the standard 1.10V DDR5 voltage and uses Micron chipset components without a heat spreader.

Suited for registered ECC server slots only

This module fits servers and workstations that require registered ECC DDR5 RDIMMs with 2Rx4 density. It will not work in desktop boards that accept only unbuffered non-ECC UDIMMs. Systems needing a heat spreader for thermal management or a different rank configuration should look at other modules.

Registered ECC with 2Rx4 rank decides compatibility

The single specification that determines fit is the registered ECC RDIMM design combined with 2Rx4 rank organisation. Your system memory controller and BIOS must explicitly support registered ECC DDR5 at this rank layout; otherwise the module will not post or will run in a reduced mode.

How it compares

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

Price $2,085.99
Pricier than about 87% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% 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 $32.59 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 Micron MTC40F2046S1RC64BD1 MTC40F2046S1RC64BD2 MTC40F2046S1RC64BH1
Model nameA-Tech 64 GB DDR5-6400 ECC RDIMM Server RAM Module
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMicron Chipset
Memory
CAS latency32
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

How do I verify the 64GB DDR5 6400 ECC RDIMM is running at the correct speed and latency after installation?

Enter the system BIOS or use a hardware monitoring tool to confirm the module reports 6400 MT/s, CAS latency 32, and 1.10 V operation.

What comes in the box and what must I purchase separately for this 288-pin DDR5 RDIMM upgrade?

The box contains one 64GB 2Rx4 ECC RDIMM module; no heat spreader or additional cables are included, and no separate components are required for installation.

Which capacity and rank option should I choose when the product lists 64GB 2Rx4 as the only configuration?

The listing provides a single 64GB 2Rx4 module; select this version when your server or workstation requires one 64GB registered DIMM with Micron chipset compatibility.

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