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Four green 288-pin DDR4 ECC RDIMM modules in anti-static tray

OWC

OWC 64GB (4x16GB) DDR4 2133 CL15 ECC Registered RDIMM for Cisco UCS M2814

SKU CH-WS01-K40R2

A 64 GB kit of four 16 GB DDR4-2133 CL15 ECC registered RDIMMs for Cisco UCS M2814 compute cartridges

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB (4 x 16GB)

  • ECC registered design protects data integrity in servers
  • 64 GB kit (4 × 16 GB) expands Cisco UCS M2814 capacity
  • DDR4 2133 CL15 at 1.2 V matches system specifications
  • 2Rx4 288-pin RDIMM form factor fits cartridge slots
  • Replaces Cisco UCSMR1X162RUA and UCSMR1X162RUG part numbers

Server-Specific DDR4 Upgrade Kit

This OWC memory kit provides 64GB of DDR4 ECC Registered RDIMM capacity across four 16GB modules. It is built for the Cisco UCS M2814 Compute Cartridge and will not work in standard desktop computers. The registered design and 2Rx4 organisation are required by that platform.

Low-Voltage Registered Operation

Each module runs at 1.2V with a CL15 latency rating at 2133 MT/s. The registered buffer reduces electrical load on the server memory controller during normal operation. No heat spreaders are fitted, so airflow through the cartridge chassis handles thermal dissipation.

Sustained Workload Stability

ECC circuitry corrects single-bit errors continuously, protecting data integrity during long-running server tasks. The four-module population fills the cartridge's slots for maximum supported capacity. Registered signalling maintains clean timing margins under sustained multi-threaded load.

How it compares

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

Price $415.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.50 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R1D42R4064S
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsCisco UCS M2814 Compute Cartridge

Other versions of this model

5 more in the same range

Questions about this item

How do I install the 288-pin DDR4 ECC RDIMM modules into the Cisco UCS M2814 Compute Cartridge, and what step is often missed?

Power down the cartridge, open the chassis, align each 16GB module's notch with the slot key, press firmly until the retention clips lock on both sides, then verify all four modules are recognised in the BIOS before closing the case.

What maintenance or replacement will the 64GB ECC Registered RDIMM kit need over time?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; replacement is only needed if a DIMM fails or if the system is upgraded beyond the 64GB capacity.

What limit appears first when the 2133MHz CL15 2Rx4 RDIMMs run under sustained load in the M2814?

The DDR4 2133 MT/s data rate and CL15 latency set the bandwidth ceiling, while the registered buffer adds one cycle of address/command delay that becomes the bottleneck during continuous heavy memory traffic.

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