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Four green DDR4 LRDIMM modules in anti-static bags

OWC

OWC 256GB (4x64GB) DDR4 2400 CL17 4Rx4 288-pin ECC LRDIMM Cisco UCS C240 M4

SKU CH-1XJC-9Q852

Four 64 GB DDR4-2400 ECC LRDIMMs totalling 256 GB, CL17 at 1.2 V, built for Cisco UCS C240 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)

  • ECC load-reduced design protects data integrity in servers
  • 256 GB kit (four 64 GB modules) maximises capacity
  • DDR4 2400 CL17 at 1.2 V balances speed and efficiency
  • 288-pin 4Rx4 LRDIMM built for Cisco UCS C240 M4
  • Backward compatible with 2133 MHz systems for flexible deployment

Cisco UCS C240 M4 memory kit

This kit provides 256GB of DDR4 ECC load-reduced memory across four 64GB modules for the Cisco UCS C240 M4 server. It is intended for administrators upgrading or repairing that specific platform. The modules will not work in standard desktops or in systems that require unbuffered or registered ECC DIMMs.

Capacity and headroom

Each module is a 4Rx4 64GB LRDIMM running at DDR4 2400 with CL17 latency, delivering 256GB total capacity for large virtualisation or database workloads. The kit fills four slots, so further expansion requires free DIMM sockets on the motherboard. Backward compatibility with 2133MHz operation is supported.

Thermals and power

The modules operate at 1.2V and have no heat spreaders, relying on chassis airflow for cooling. Load-reduced buffering reduces electrical load on the memory controller, helping power efficiency in dense configurations. Noise and thermal behaviour depend entirely on the server's fan profile and workload intensity.

Privalumai

  • ECC load-reduced design protects data integrity in servers
  • 256 GB kit (four 64 GB modules) maximises capacity
  • DDR4 2400 CL17 at 1.2 V balances speed and efficiency
  • 288-pin 4Rx4 LRDIMM built for Cisco UCS C240 M4
  • Backward compatible with 2133 MHz systems for flexible deployment

Specifikacijos

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 C240 M4

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Will these 2400MHz LRDIMMs run with my existing 2133MHz modules in the Cisco UCS C240 M4?

Yes, the kit is backward compatible with 2133MHz speeds, but LRDIMMs cannot be mixed with unbuffered or standard registered ECC DIMMs.

How can I confirm the 4Rx4 CL17 timings are active after installation?

Check the BIOS memory configuration or OS hardware report; it should show 2400 MT/s, CL17 latency, 4Rx4 organisation and ECC load-reduced status.

Does the 256GB kit include only the four 64GB sticks or are any tools or cables supplied?

The package contains the four 64GB DDR4 2400 CL17 4Rx4 288-pin ECC LRDIMM modules; no tools, cables or additional hardware are included.

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