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Green rectangular DDR4 memory module with gold edge connectors and black chips, no heat spreader

OWC

OWC 2R9D44R4128G 128GB DDR4 2933 ECC RDIMM memory upgrade

SKU CH-V1KA-GXEFF

128 GB DDR4 2933 ECC registered RDIMM for Supermicro X11 server and workstation motherboards

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.2V
  • ECCYes

Capacity 128GB

  • 128GB capacity supports large server workloads
  • DDR4 2933 speed matches Supermicro X11 specifications
  • ECC registered design prevents data corruption in critical systems
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz platforms

128GB DDR4 ECC RDIMM for Supermicro X11

This 128GB DDR4 2933MHz registered ECC module is built for Supermicro X11DPT-L, X11DPT-PS, X11DPU, X11DPX-T and X11DSC+ motherboards. It targets server and workstation administrators who need high-capacity registered memory with error correction for stable operation under sustained loads.

Installation notes and common issues

The 288-pin RDIMM seats in standard DDR4 DIMM slots and runs at 1.2V. Registered modules must not be mixed with unbuffered memory, and the system must support ECC registered DIMMs; desktop boards will not accept them. Backward compatibility with 2133MHz, 2400MHz and 2666MHz buses is supported, so the module will down-clock if the platform requires it.

Pre-order checklist

Confirm that your motherboard is one of the listed Supermicro X11 models and that the BIOS is current enough to recognise 128GB 4Rx4 registered DIMMs. Verify the platform’s maximum memory capacity per socket and total channel population rules before purchasing. Ensure the operating system and workloads can utilise ECC registered memory.

Highlights

  • 128GB capacity supports large server workloads
  • DDR4 2933 speed matches Supermicro X11 specifications
  • ECC registered design prevents data corruption in critical systems
  • 2V operation reduces power draw in dense configurations
  • Backward compatible with 2133, 2400 and 2666MHz platforms

Specifications

BrandOWC
Part Number2R9D44R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard X11DPT-L
Supermicro Motherboard X11DPT-PS
Supermicro Motherboard X11DPU
Supermicro Motherboard X11DPX-T
Supermicro Motherboard X11DSC+

Other versions of this model

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Questions about this item

How do I verify the 128GB DDR4 2933 ECC RDIMM is running correctly after installation?

Enter the server BIOS or UEFI on boot and confirm the memory information shows 128GB total capacity, 2933MHz speed, PC4-23400 rating, CL21 latency, 1.2V voltage, and ECC Registered status for each installed module.

What ships with the OWC 2R9D44R4128G kit and what must I source separately?

The box contains the 128GB 288-pin DDR4 ECC Registered DIMM only; no heat spreader, cables, tools, or additional modules are included and must be purchased separately if required.

Which capacity or speed version of this OWC DDR4 ECC RDIMM should I choose for a Supermicro X11DPX-T motherboard?

This specific part is a single 128GB module rated at 2933MHz PC4-23400 CL21; it also runs at 2133MHz, 2400MHz, or 2666MHz if the platform requires a lower speed, but no other capacity or speed variant exists under this part number.

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