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Green 288-pin DDR4 DIMM with black heat spreader and gold contacts

Black Diamond Memory

Black Diamond Memory BD8G2666MQR26 8GB DDR4 2666 ECC Registered server RAM

SKU CH-TD4Z-BRVG9 MPN BD8G2666MQR26

8 GB DDR4 2666 ECC registered dual-rank module for server error correction

  • Capacity8GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank2Rx4

Capacity 8GB

Struck-through versions exist but are not stocked here.

Rank 2Rx4

  • ECC protection prevents data corruption in critical workloads
  • Registered buffering reduces electrical load for stable server operation
  • 8 GB capacity adds memory headroom for virtualization tasks
  • DDR4 2666 speed delivers 21300 MT/s bandwidth for responsive performance
  • 2Rx4 rank organisation optimises density on 288-pin modules

8GB DDR4 2666 ECC Registered Module

This 8GB DDR4 2666 module provides ECC registered memory for server platforms that require error correction and signal buffering. The 2Rx4 rank organisation suits multi-channel configurations in enterprise environments. It targets administrators upgrading or populating DIMM slots in qualified 288-pin systems.

Capacity and Headroom

The single 8GB capacity adds modest density per slot, useful for expanding existing arrays or filling spare channels. At DDR4 2666 (PC4 21300) the bandwidth supports typical virtualisation and database workloads within the rated speed. Workloads demanding higher per-module density or faster data rates will exhaust this module's limits.

Build and Connectors

The 288-pin DDR4 SDRAM form factor fits standard registered DIMM sockets in rackmount and tower servers. Registered signalling reduces electrical load on the memory controller, enabling larger populations per channel. ECC circuitry corrects single-bit errors to maintain data integrity during continuous operation. The module carries no onboard cooling, relying on chassis airflow.

Not for Non-ECC or Unbuffered Platforms

Builders needing memory for consumer desktops, laptops or workstations that accept only unbuffered non-ECC DIMMs cannot use this module. Systems limited to lower DDR4 speeds or different pin counts will not recognise the registered interface. Buyers requiring capacities above 8GB per slot should evaluate higher-density registered alternatives.

Highlights

  • ECC protection prevents data corruption in critical workloads
  • Registered buffering reduces electrical load for stable server operation
  • 8 GB capacity adds memory headroom for virtualization tasks
  • DDR4 2666 speed delivers 21300 MT/s bandwidth for responsive performance
  • 2Rx4 rank organisation optimises density on 288-pin modules

Specifications

BrandBlack Diamond Memory
ModelBD8G2666MQR26
Capacity8GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
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 weight0.45 kg
Package size152 × 102 × 51 mm

Other versions of this model

5 more in the same range

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

Questions about this item

Will the 288-pin DDR4 2666 registered module work in my older DDR4 server board that only supports unbuffered memory?

No — registered modules require a chipset and BIOS that explicitly support registered ECC memory; they will not function in slots designed for unbuffered DDR4.

How can I confirm the 2Rx4 ECC registered sticks are running at PC4 21300 after installation?

Check the BIOS memory information screen or run a tool such as dmidecode or CPU-Z; both will report 2666 MT/s, ECC active, and registered mode.

Does the BD8G2666MQR26 package include a heatsink or any extra cables, or is it just the bare module?

Only the 8 GB 288-pin DDR4 2666 ECC registered DIMM is supplied; no heatsink, cables or additional accessories are included.

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