We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • Memory rank4Rx4

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.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $797.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.23 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number2L4D44R4128P
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 ECC LRDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS C240 M4

Other versions of this model

5 more in the same range

Questions about this item

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.

More in Model-Specific Memory Upgrades

Similar items