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Green rectangular circuit board with black memory chips and gold edge connectors

Black Diamond Memory

Black Diamond Memory BD64G2666MQR96 64GB DDR4 2666 ECC Registered server RAM

SKU CH-V78R-3RNSC MPN BD64G2666MQR96

64 GB DDR4 2666 ECC Registered server memory with 4Rx4 rank for enterprise stability

  • Capacity64GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank4Rx4

Capacity 64GB

Struck-through versions exist but are not stocked here.

Rank 4Rx4

  • 64GB capacity handles large server workloads
  • DDR4 2666 speed delivers 21300 bandwidth
  • ECC Registered design protects data integrity
  • 288-pin DDR4 form factor fits standard slots
  • 4Rx4 rank organisation maximises module density

64GB DDR4 2666 ECC Registered server memory

This 64GB DDR4 2666 module provides error-correcting registered memory for enterprise servers and workstations. The 288-pin form factor fits standard DDR4 slots in qualified platforms. It is intended for administrators who need data integrity and high density in a single DIMM. Systems without registered ECC support cannot use this module.

Capacity and headroom: 64GB in a single 4Rx4 rank

The 64GB capacity allows large in-memory datasets and heavy virtualization workloads to run without swapping. DDR4 2666 speed delivers 21300 MB/s peak bandwidth per module. Workloads that exceed 64GB per DIMM slot or require faster memory clocks will hit the density and speed limits of this part.

Registered ECC and broad qualification

Registered signalling reduces electrical load on the memory controller, enabling stable operation with many modules installed. ECC corrects single-bit errors to protect data integrity. The manufacturer states qualification across over 200000 server configurations, simplifying compatibility checks for supported platforms.

Highlights

  • 64GB capacity handles large server workloads
  • DDR4 2666 speed delivers 21300 bandwidth
  • ECC Registered design protects data integrity
  • 288-pin DDR4 form factor fits standard slots
  • 4Rx4 rank organisation maximises module density

Specifications

BrandBlack Diamond Memory
ModelBD64G2666MQR96
Capacity64GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
FeaturesWith decades of experience specializing in memory and server parts, Black Diamond Memory is a proven manufacturer in the industry. Our products currently support over 200,000 configurations as well as support for enterprise servers, desktops, laptops, and a large variety of other devices.
Shipping weight0.18 kg
Package size178 × 51 × 13 mm

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 288-Pin DDR4 2666 Registered ECC modules fit alongside existing DDR4 Registered DIMMs in my server?

Yes, the BD64G2666MQR96 uses the standard 288-Pin DDR4 form factor and Registered ECC signalling, so it can populate open slots next to other DDR4 Registered DIMMs; the memory controller will run all modules at the lowest common speed.

How can I verify the 64GB 4Rx4 Registered ECC kit is detected and running at 2666 MT/s after installation?

Check the BIOS memory information or run a tool such as dmidecode to confirm 64GB capacity, 2666 MT/s data rate, Registered type, ECC enabled and 4Rx4 organisation on the new DIMM.

What ships with the BD64G2666MQR96 and what must I source separately?

The box contains the single 64GB 288-Pin DDR4 2666 Registered ECC DIMM only; no extra brackets, cables or software are included or required.

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