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Two green DDR4 LRDIMM sticks with gold contacts and black chips

OWC

OWC 128GB (2x64GB) DDR4 2400 CL17 ECC LRDIMM 4Rx4 288-pin 1.2V Cisco UCS C240 M4 memory upgrade

SKU CH-SMJQ-XF8V5

128 GB kit of two 64 GB DDR4 2400 CL17 ECC load-reduced DIMMs for Cisco UCS C240 M4 servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR4 ECC LRDIMM
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.2V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • ECC load-reduced design protects data integrity in servers
  • 128GB kit with two 64GB modules maximises Cisco UCS C240 M4 capacity
  • DDR4 2400 CL17 at 1.2V balances speed and power efficiency
  • 288-pin 4Rx4 LRDIMM form factor fits the qualified platform exactly
  • Backward compatible with 2133MHz systems for flexible deployment

Cisco UCS C240 M4 memory upgrade

This 128GB kit consists of two 64GB DDR4 2400 CL17 ECC load-reduced DIMMs built for the Cisco UCS C240 M4 server. The modules operate at 1.2V and use a 288-pin 4Rx4 organisation to deliver registered error correction for data integrity. They are not compatible with standard desktop platforms or with unbuffered and registered ECC memory types.

Sustained load behaviour

ECC load-reduced technology reduces the electrical load on the memory controller, allowing the server to maintain stable throughput during extended virtualization or database workloads. The CL17 latency and PC4-19200 rating provide consistent bandwidth without the timing variability seen in consumer modules. Backward compatibility with 2133MHz systems lets the kit slot into existing configurations without reconfiguration.

Thermals noise and power

The modules run at the standard 1.2V DDR4 voltage and have no heat spreader, relying on the server's directed airflow for cooling. Passive operation means zero acoustic contribution, while the load-reduced architecture keeps per-module power draw low enough for dense chassis population. JEDEC and RoHS compliance ensures the kit meets enterprise thermal and environmental specifications.

Points forts

  • ECC load-reduced design protects data integrity in servers
  • 128GB kit with two 64GB modules maximises Cisco UCS C240 M4 capacity
  • DDR4 2400 CL17 at 1.2V balances speed and power efficiency
  • 288-pin 4Rx4 LRDIMM form factor fits the qualified platform exactly
  • Backward compatible with 2133MHz systems for flexible deployment

Caractéristiques

BrandOWC
Part Number2L4D44R4128P
Capacity128GB (2 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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Questions sur cet article

How much power does each 64GB LRDIMM draw at 1.2V under continuous server load?

Each module operates at 1.2V DDR4 voltage; the LRDIMM buffer reduces electrical load on the memory bus compared with standard registered DIMMs, helping overall platform power efficiency.

What must the Cisco UCS C240 M4 already have for this 288-pin kit to be recognised?

The server needs free 288-pin DDR4 slots that support ECC load-reduced memory and a BIOS that accepts 4Rx4 64GB modules; mixing with unbuffered or registered ECC DIMMs is not supported.

Will these 2400MHz modules run reliably if the C240 M4 currently uses 2133MHz memory?

Yes, the kit is backward compatible with 2133MHz operation; all installed DIMMs will run at the lowest common speed, so 2400MHz modules down-clock to match existing 2133MHz sticks.

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