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Eight green DDR4 RDIMM modules in anti-static tray

OWC

OWC 256GB (8x32GB) DDR4 2933 PC4-23400 CL21 2Rx4 288-pin 1.2V ECC Registered RDIMM memory upgrade CascadeLake

SKU CH-EQ1P-6WG65

Eight 32 GB registered ECC DDR4 modules at 2933 MHz CL21 1.2 V for Dell PowerEdge C4140 Cascade Lake servers

  • Capacity256GB (8 x 32GB)
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 256GB (8 x 32GB)

Show 4 more configurations
  • ECC registered design protects data integrity in servers
  • 256 GB kit with eight 32 GB modules maximises capacity
  • DDR4 2933 CL21 at 1.2 V balances speed and efficiency
  • 288-pin RDIMM form factor fits PowerEdge C4140 CascadeLake systems
  • Backward compatible with 2133, 2400 and 2666 MHz platforms

Server-grade ECC RDIMM kit

This OWC kit provides 256GB of DDR4 2933 registered ECC memory across eight 32GB modules. It is built for the Dell PowerEdge C4140 with CascadeLake CPUs and will not work in standard desktop computers. The registered design and ECC function target data-integrity workloads in servers, workstations and NAS systems. Mixing with unbuffered or load-reduced DIMMs is not supported.

256GB capacity with JEDEC headroom

Eight 32GB ranks deliver 256GB total at PC4-23400 CL21, running at 1.2V. The modules are backward compatible with 2133, 2400 and 2666MHz bus speeds, so they will clock down automatically if the platform requires a lower frequency. Capacity runs out when the application footprint exceeds the installed 256GB or when the memory controller's maximum supported density is reached.

288-pin registered DIMM form factor

Each stick uses the 288-pin DDR4 RDIMM layout and requires a motherboard that accepts registered ECC modules. No heat spreader is fitted, so airflow in the server chassis must be sufficient for bare DRAM. The kit replaces Dell part numbers including 8WKDY and SNP8WKDYC/32G, freeing procurement from sourcing individual OEM modules.

Highlights

  • ECC registered design protects data integrity in servers
  • 256 GB kit with eight 32 GB modules maximises capacity
  • DDR4 2933 CL21 at 1.2 V balances speed and efficiency
  • 288-pin RDIMM form factor fits PowerEdge C4140 CascadeLake systems
  • Backward compatible with 2133, 2400 and 2666 MHz platforms

Specifications

BrandOWC
Part Number2R9D42R4256K
Capacity256GB (8 x 32GB)
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 about this item

Will the 2933MHz modules run with the 2400MHz DIMMs already in my PowerEdge C4140?

Yes, the kit is backward compatible with 2133MHz, 2400MHz and 2666MHz speeds, so it will operate at the lowest common frequency when mixed.

How can I verify the 256GB kit is detected at 2933MHz with ECC active after installation?

Check the system BIOS or iDRAC memory inventory; it should show eight 32GB registered DIMMs running at 2933MHz with ECC registered status.

Does the 8x32GB package include heat spreaders or any extra cables I need to buy separately?

The modules ship without heat spreaders and no additional cables are required; the kit contains only the eight 288-pin RDIMMs.

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