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Four green DDR4 288-pin RDIMM modules in a row

OWC

OWC 256GB (4×64GB) DDR4 2933 CL21 ECC Registered RDIMM PowerEdge C4140

SKU CH-24QK-5B0J6

A 256 GB kit of four 64 GB DDR4 2933 ECC registered RDIMMs validated for the Dell PowerEdge C4140 with Cascade Lake CPUs

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 256GB (4 x 64GB)

Voir les 4 autres configurations
  • 256 GB total capacity from four 64 GB modules
  • DDR4 2933 MT/s speed rated at PC4-23400 CL21
  • ECC registered design detects and corrects single-bit errors
  • 2 V operation reduces power draw in dense servers
  • Backward compatible with 2133, 2400 and 2666 MT/s systems

OWC 256GB DDR4 ECC RDIMM kit

This 256GB kit contains four 64GB DDR4 2933 PC4-23400 CL21 2Rx4 288-pin 1.2V ECC Registered DIMMs. It is built for the PowerEdge C4140 with CascadeLake CPUs and suits server, workstation or NAS workloads that require registered ECC memory.

Installation notes for registered ECC

Modules install like standard DIMMs but the system must support registered ECC DDR4. The kit cannot be mixed with unbuffered or load-reduced ECC memory. Backward compatibility with 2133MHz, 2400MHz and 2666MHz speeds is specified by the manufacturer.

Verify your C4140 configuration

Confirm the server uses CascadeLake processors and that all memory slots accept registered ECC RDIMMs. Check current module population rules before adding this 4×64GB kit. Ensure the BIOS is updated for full 256GB capacity support.

Points forts

  • 256 GB total capacity from four 64 GB modules
  • DDR4 2933 MT/s speed rated at PC4-23400 CL21
  • ECC registered design detects and corrects single-bit errors
  • 2 V operation reduces power draw in dense servers
  • Backward compatible with 2133, 2400 and 2666 MT/s systems

Caractéristiques

BrandOWC
Part Number2R9D42R4256S
Capacity256GB (4 x 64GB)
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 confirm the 2933 MHz CL21 ECC registered kit is running correctly in my PowerEdge C4140 after installation?

Enter the BIOS or iDRAC on the PowerEdge C4140 and verify each of the four 64 GB modules shows 2933 MT/s, CL21 timings, 1.2 V, ECC registered and 2Rx4 organisation.

What does the 256 GB kit contain and is anything else required to use it in a C4140?

The box holds four 64 GB 288-pin DDR4 ECC registered RDIMMs; no extra parts are needed for a compatible PowerEdge C4140 with Cascade Lake CPUs.

Which capacity version should I choose for a PowerEdge C4140 that supports 64 GB RDIMMs?

Select this 256 GB kit (4 × 64 GB) when the server takes 64 GB registered modules and you want the full 256 GB upgrade.

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