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Two green 288-pin DDR4 RDIMM modules in anti-static tray

OWC

OWC 128GB (2x64GB) DDR4 2933 PC4-23400 CL21 4Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade

SKU CH-N69Q-GGRNE

128 GB DDR4-2933 ECC registered RDIMM kit for Dell PowerEdge C4140 servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank4Rx4

Capacity 128GB (2 x 64GB)

Show 4 more
  • ECC registered design protects data integrity in servers
  • 128 GB kit (2 × 64 GB) expands memory capacity
  • DDR4 2933 MHz CL21 speed matches system specs
  • 2 V operation reduces power draw
  • Compatible with PowerEdge C4140 and backward compatible with 2133, 2400, 2666 MHz

Server-grade DDR4 ECC RDIMM kit

This 128GB kit contains two 64GB DDR4 2933 ECC registered DIMMs built for the PowerEdge C4140 with SkyLake CPUs. It operates at 1.2V with CL21 latency and a 4Rx4 organisation. The modules are JEDEC and RoHS compliant and carry a limited lifetime warranty. They are designed for server and workstation workloads that require error-correcting registered memory.

Registered ECC limits and platform constraints

Registered ECC RDIMMs cannot be used in standard desktop computers and must not be mixed with unbuffered or load-reduced ECC modules. The kit runs at 2933 MT/s and is backward compatible with 2133, 2400 and 2666 MT/s bus speeds. All 288 pins follow the DDR4 RDIMM pinout, so the system must support registered memory and the corresponding memory controller configuration.

Upgrading from lower-capacity RDIMMs

The kit replaces smaller-capacity registered ECC DIMMs in the PowerEdge C4140, doubling or quadrupling memory per channel depending on the existing population. The jump is worth it when virtualisation, database or compute workloads exceed the current memory ceiling and the platform supports 64GB 4Rx4 modules. Buyers who need unbuffered memory or consumer form factors cannot use this product.

How it compares

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

Price $720.99
Pricier than about 56% 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 $5.63 per GB
Cheaper than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R9D44R4128P
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsPowerEdge C4140 (SkyLake CPU)

Other versions of this model

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Questions about this item

Should I buy the 128GB kit as two 64GB modules or look for a different capacity?

This kit is sold only as a matched pair of two 64GB modules giving 128GB total; no other capacity is offered for this part number.

What does the 2933MHz speed rating deliver inside a PowerEdge C4140?

The modules run at DDR4 2933 (PC4-23400) with CL21 latency at 1.2V, and the C4140 (SkyLake CPU) will operate them at that rated frequency.

Will the 288-pin ECC Registered DDR4 interface work in my server?

Yes — the kit uses 288-pin DDR4 ECC Registered DIMMs, the exact form factor required by the PowerEdge C4140; it also supports backward compatibility with 2133, 2400 and 2666MHz bus speeds.

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