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Four green 288-pin DDR4 ECC registered DIMMs, no heat spreaders

OWC

OWC 256GB (4x64GB) DDR4 2933 CL21 4Rx4 ECC RDIMM PowerEdge C4140

SKU CH-P0AV-5P7M4

256 GB kit of four 64 GB DDR4 2933 CL21 ECC registered RDIMMs for PowerEdge C4140 servers

  • 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
  • ECC registered design protects data integrity in servers
  • 256GB kit (4 × 64GB) expands C4140 memory capacity
  • DDR4 2933 CL21 at 1.2V matches OEM specifications
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133, 2400 and 2666MHz systems

Server Memory Kit

This OWC kit provides 256GB of DDR4 ECC Registered memory in four 64GB modules built for the PowerEdge C4140 with SkyLake CPUs. It runs at 2933MHz with CL21 latency and 1.2V operation, delivering error-correcting, registered performance for server and workstation workloads.

Compatibility Scope

Suited for administrators upgrading a compatible PowerEdge C4140 or similar server platforms that require 288-pin DDR4 ECC RDIMMs. Not for desktop PCs, laptops, or consumer motherboards that only accept unbuffered non-ECC memory, nor for systems needing load-reduced DIMMs.

Capacity And Headroom

The 256GB total across four slots supports large virtualisation clusters, in-memory databases and heavy multi-threaded compute tasks. Headroom ends when the platform's maximum supported memory per socket or total slot count is reached, or when workloads demand speeds above 2933MHz.

Points forts

  • ECC registered design protects data integrity in servers
  • 256GB kit (4 × 64GB) expands C4140 memory capacity
  • DDR4 2933 CL21 at 1.2V matches OEM specifications
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2133, 2400 and 2666MHz systems

Caractéristiques

BrandOWC
Part Number2R9D44R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemPowerEdge C4140 (SkyLake CPU)

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Questions sur cet article

Does the Dell PowerEdge C4140 need a specific BIOS version to recognise the 4Rx4 2933 modules?

The kit is validated for the PowerEdge C4140 with SkyLake CPUs and runs at 2933 MHz CL21 1.2 V without additional configuration.

Can I keep my existing 2666 MHz RDIMMs and add this 2933 MHz kit in the same server?

The modules are backward compatible with 2133 2400 and 2666 MHz speeds so they will downclock to match slower RDIMMs already installed.

How can I confirm the full 256 GB kit is detected and running at 2933 MHz after installation?

Check the BIOS memory information or OS tools such as dmidecode; they should show four 64 GB registered ECC DIMMs at 2933 MT/s.

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