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Eight green 288-pin DDR4 LRDIMM modules with black chips, no heat spreaders

OWC

OWC 512GB (8x64GB) DDR4 2400 CL17 ECC Load Reduced LRDIMM Kit

SKU CH-NN5T-6N037

Eight 64 GB DDR4 2400 CL17 ECC load-reduced DIMMs totalling 512 GB for Cisco UCS B260 M4 and B460 M4 servers

  • Capacity512GB (8 x 64GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 512GB (8 x 64GB)

  • 512 GB total capacity with eight 64 GB modules
  • ECC load-reduced design improves signal integrity in dense servers
  • DDR4-2400 CL17 at 1.2 V matches JEDEC PC4-19200 spec
  • Qualified for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4
  • Backward compatible with 2133 MHz DDR4 systems

Server-grade ECC LRDIMM kit

This OWC kit delivers 512GB of DDR4 ECC Load Reduced memory across eight 64GB modules. It is built for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4 servers that require registered, error-correcting DIMMs. The 288-pin LRDIMM format will not fit standard desktop motherboards or workstations that accept only unbuffered or registered ECC memory.

Eight-module population fills all slots

The kit supplies a full complement of 64GB LRDIMMs, letting administrators reach the platform's maximum supported capacity in a single purchase. Each module operates at 1.2V with CL17 latency at 2400MT/s, and the 4Rx4 organisation reduces electrical load on the memory controller compared with standard registered DIMMs. No heat spreaders are included, so airflow in the chassis must handle thermal dissipation.

DDR4 2400 interface with 2133MT/s fallback

The memory runs at PC4-19200 speeds on compatible Cisco UCS platforms and will down-clock to 2133MT/s when installed in systems that only support the lower data rate. Mixing these Load Reduced modules with unbuffered or registered ECC DIMMs is not supported and will prevent the server from posting. Buyers needing a different capacity, rank configuration, or form factor must select a separate kit.

Highlights

  • 512 GB total capacity with eight 64 GB modules
  • ECC load-reduced design improves signal integrity in dense servers
  • DDR4-2400 CL17 at 1.2 V matches JEDEC PC4-19200 spec
  • Qualified for Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4
  • Backward compatible with 2133 MHz DDR4 systems

Specifications

BrandOWC
Part Number2L4D44R4512K
Capacity512GB (8 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

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Questions about this item

Will the 4Rx4 ECC LRDIMM modules need replacement if I later upgrade the Cisco UCS B260 M4 or B460 M4 to a newer CPU generation?

The 512 GB kit uses DDR4 2400 CL17 4Rx4 1.2 V LRDIMM modules designed for the Cisco UCS B260 M4 E7 v4 and B460 M4 E7 v4; a CPU generation change that requires a different memory generation or rank configuration would require new modules.

What limit appears first when all eight 64 GB LRDIMMs run at DDR4 2400 CL17 under sustained server workloads?

The 2400 MT/s data rate and CL17 latency set the bandwidth and response ceiling; sustained loads will hit the DDR4 2400 throughput limit before any other module constraint.

How much heat and power do the eight 1.2 V LRDIMMs add when the Cisco UCS B260 M4 or B460 M4 runs all day?

Each 64 GB module operates at 1.2 V without a heat spreader; total power draw scales with eight modules at DDR4 2400, and the server's existing airflow handles the resulting heat.

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