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Four green DDR4 ECC registered DIMMs in static bags

OWC

OWC 64GB (4×16GB) DDR4 2933 CL21 2Rx4 ECC RDIMM PowerEdge C4140 memory upgrade

SKU CH-91RP-DMSA6

64 GB kit of four 16 GB DDR4 2933 CL21 ECC registered DIMMs for PowerEdge C4140 servers

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 64GB (4 x 16GB)

Voir les 4 autres configurations
  • ECC registered design protects data integrity in servers
  • 64GB kit with four 16GB modules expands capacity
  • DDR4 2933 CL21 speed matches system requirements
  • 2V operation reduces power draw in dense configs
  • Backward compatible with 2133 2400 2666MHz platforms

System-specific server memory

This kit provides 64 GB of DDR4 ECC registered RDIMM memory in four 16 GB modules. It is built for the Dell PowerEdge C4140 with Cascade Lake processors and will not work in standard desktop computers. The modules operate at 2933 MHz with CL21 latency and 1.2 V.

Straightforward DIMM installation

The 288-pin RDIMMs seat like any server memory; power down, open the chassis, align the notch and press until the latches click. Common issues arise when registered ECC modules are mixed with unbuffered or load-reduced DIMMs, which the platform does not support. Backward compatibility covers 2133, 2400 and 2666 MHz speeds.

Registered ECC with 2Rx4 organisation

The single specification that decides fit is the 2Rx4 registered ECC design at DDR4 2933. Systems requiring unbuffered, load-reduced or different rank configurations cannot use this kit. JEDEC and RoHS compliance ensures a warranty-safe upgrade for the validated platform.

Points forts

  • ECC registered design protects data integrity in servers
  • 64GB kit with four 16GB modules expands capacity
  • DDR4 2933 CL21 speed matches system requirements
  • 2V operation reduces power draw in dense configs
  • Backward compatible with 2133 2400 2666MHz platforms

Caractéristiques

BrandOWC
Part Number2R9D42R4064S
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemPowerEdge C4140 (CascadeLake CPU)

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Questions sur cet article

How can I verify the 64GB kit is running at 2933 MHz CL21 after installing it in my PowerEdge C4140?

Enter the BIOS or use a tool like dmidecode to confirm each 16GB module shows DDR4 2933 PC4-23400 CL21 2Rx4 1.2V ECC Registered and that the system reports 64GB total.

What comes in the box and is anything else required for installation?

The kit includes four 16GB 288-pin DDR4 ECC Registered RDIMM modules; no extra parts are needed — just open the server, populate the slots and power on.

Should I choose this 64GB (4×16GB) kit or a different capacity for my C4140 with Cascade Lake CPUs?

Select this 64GB kit when you need four 16GB 2Rx4 ECC Registered modules at 2933 MHz; choose another capacity only if your workload demands more or less total memory.

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