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Two green DDR4 DIMMs with black heat spreaders

Black Diamond Memory

Black Diamond Memory BD128GX22400MQR96 256GB (2 x 128GB) DDR4 2400 ECC Registered server RAM

SKU CH-VX8P-QAYKX MPN BD128GX22400MQR96

256 GB DDR4 2400 ECC registered server memory kit with two 128 GB modules

  • Capacity256GB (2 x 128GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2400 (PC4 19200)
  • ECCYes
  • Buffered/RegisteredRegistered
  • Rank4Rx4

Capacity 256GB (2 x 128GB)

Struck-through versions exist but are not stocked here.

Rank 4Rx4

  • 256GB total capacity from two 128GB modules
  • DDR4 2400 speed rated at PC4 19200
  • ECC registered design protects data integrity
  • 4Rx4 rank organisation supports high-density servers
  • 288-pin DDR4 form factor fits standard server slots

Server Memory Kit

Black Diamond Memory BD128GX22400MQR96 delivers 256GB of DDR4 2400 ECC Registered memory across two 128GB modules. The 288-pin DIMMs operate at PC4 19200 speed with a 4Rx4 rank structure. This kit targets enterprise servers and workstations that require large-capacity, error-correcting registered memory for stable operation under sustained workloads.

Suited For And Limits

This memory suits administrators upgrading or populating servers that accept 128GB registered DIMMs at DDR4 2400. It is not for systems limited to unbuffered UDIMMs, platforms capped below 128GB per slot, or boards that cannot address 4Rx4 modules. Buyers who need higher frequencies, lower densities, or non-ECC memory should look at other product lines.

Registered ECC Benefit

The registered buffer reduces electrical load on the server memory controller, allowing the platform to support the full 256GB capacity across two slots. ECC circuitry detects and corrects single-bit errors, protecting data integrity in databases, virtualization hosts, and long-running compute tasks. These features replace standard unbuffered modules that lack error correction and cannot scale to this density.

Highlights

  • 256GB total capacity from two 128GB modules
  • DDR4 2400 speed rated at PC4 19200
  • ECC registered design protects data integrity
  • 4Rx4 rank organisation supports high-density servers
  • 288-pin DDR4 form factor fits standard server slots

Specifications

BrandBlack Diamond Memory
ModelBD128GX22400MQR96
Capacity256GB (2 x 128GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2400 (PC4 19200)
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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Questions about this item

What motherboard slot and DDR generation does this 288-pin DDR4 2400 kit require?

A server motherboard with 288-pin DDR4 DIMM slots that support DDR4 2400 (PC4 19200) registered ECC memory.

Can I mix these 4Rx4 registered ECC modules with older unbuffered non-ECC DDR4 sticks in the same system?

No, registered ECC and unbuffered non-ECC memory use different signalling and cannot be mixed on the same platform.

How do I confirm the kit is running at DDR4 2400 with ECC active after installation?

Check the BIOS memory information or use a tool such as dmidecode to verify speed shows 2400 MT/s and ECC status reads enabled.

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