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Four green DDR4 LRDIMM modules with gold contacts and black chips

OWC

OWC 256GB (4x64GB) DDR4 2400 PC4-19200 CL17 4Rx4 288-pin 1.2V ECC LRDIMM memory upgrade

SKU CH-8M6J-GAHA0

Adds 256 GB of DDR4 2400 ECC load-reduced memory in four 64 GB modules for Cisco UCS B260 M4 and B460 M4 servers

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 256GB (4 x 64GB)

  • 256 GB total capacity from four 64 GB modules
  • DDR4 2400 speed with CL17 latency for server workloads
  • ECC load-reduced design protects data integrity in critical systems
  • 2 V operation reduces power draw in dense configurations
  • Compatible with Cisco UCS B260 M4 and B460 M4 E7 v4 platforms

Server memory kit

This 256 GB kit contains four 64 GB DDR4 2400 ECC Load-Reduced DIMMs built for Cisco UCS B260 M4 and B460 M4 E7 v4 servers. It targets administrators who need maximum capacity in those specific platforms.

Capacity and headroom

Four quad-rank modules deliver 256 GB total, letting the supported servers handle large virtualization workloads and in-memory databases. The 4Rx4 organisation increases density but limits the number of modules per channel, so further expansion is constrained by the platform's slot count.

DDR4 2400 interface limits

The modules run at 2400 MT/s with CL17 latency and 1.2 V, and they are backward compatible with 2133 MT/s operation. Load-Reduced ECC cannot be mixed with unbuffered or registered ECC DIMMs, and the 288-pin form factor fits only DDR4 server sockets.

Highlights

  • 256 GB total capacity from four 64 GB modules
  • DDR4 2400 speed with CL17 latency for server workloads
  • ECC load-reduced design protects data integrity in critical systems
  • 2 V operation reduces power draw in dense configurations
  • Compatible with Cisco UCS B260 M4 and B460 M4 E7 v4 platforms

Specifications

BrandOWC
Part Number2L4D44R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR4 ECC LRDIMM
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.2V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
Heat SpreaderNo
Compatible SystemCisco UCS B260 M4 E7 v4
Cisco UCS B460 M4 E7 v4

Other versions of this model

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Questions about this item

Will these 2400 MHz ECC LRDIMMs run with the 2133 MHz modules I already have in my Cisco UCS B260 M4?

The modules are backward compatible with 2133 MHz speeds, but LRDIMMs cannot be mixed with registered or unbuffered DIMMs; all slots must use the same load-reduced type.

How can I confirm the kit is running at 2400 MT/s with CL17 and ECC active after installation?

Enter the server BIOS or use a hardware inventory tool such as Cisco UCS Manager; it will display the configured speed, CAS latency, ECC status and 4Rx4 organisation for each DIMM.

Does the 256 GB kit include only the four 64 GB LRDIMMs or are any cables, brackets or licences supplied?

The package contains the four 64 GB DDR4 2400 CL17 1.2 V ECC LRDIMMs and nothing else; no cables, brackets or licences are included.

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