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Green rectangular DDR4 memory module with gold contacts and black chips on both sides, no heat spreader

OWC

OWC 128GB DDR4 2933MHz CL21 ECC Registered RDIMM memory upgrade

SKU CH-2PWV-QEYFP

128GB DDR4 2933MHz 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 heavy server workloads
  • DDR4 2933MHz CL21 delivers high-speed data throughput
  • ECC registered design corrects errors for reliability
  • 2V operation reduces power draw and heat
  • Compatible with five Supermicro X11 motherboards

Server-grade ECC RDIMM for Supermicro X11

This 128GB DDR4 2933MHz CL21 registered DIMM delivers ECC error correction for Supermicro X11DPi-NT, X11DPL-i, X11DPS-RE, X11DPT-B and X11DPT-BH motherboards. It operates at 1.2V with a 4Rx4 organisation and no heat spreader. The module targets servers, workstations and NAS systems that require registered memory.

Verify motherboard model and memory population rules

Confirm your board is one of the five listed X11 models before ordering. Registered ECC RDIMMs will not work in standard desktop platforms and cannot be mixed with unbuffered modules. Check the system manual for maximum capacity per slot, supported ranks per channel and required DIMM population order.

Fits 288-pin DDR4 slots; runs at lower JEDEC speeds

The 288-pin form factor seats directly in the board's DDR4 slots. Backward compatibility allows operation at 2133MHz, 2400MHz or 2666MHz if the platform demands it. Using registered ECC memory frees the CPU from single-bit error handling and supports higher densities per channel than unbuffered alternatives.

Highlights

  • 128GB capacity supports heavy server workloads
  • DDR4 2933MHz CL21 delivers high-speed data throughput
  • ECC registered design corrects errors for reliability
  • 2V operation reduces power draw and heat
  • Compatible with five Supermicro X11 motherboards

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 X11DPi-NT
Supermicro Motherboard X11DPL-i
Supermicro Motherboard X11DPS-RE
Supermicro Motherboard X11DPT-B
Supermicro Motherboard X11DPT-BH

Other versions of this model

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Questions about this item

Does the 128GB module ship with any cables or brackets, or is it just the DIMM?

Only the 288-pin DDR4 ECC Registered RDIMM is included; no cables, brackets or additional hardware are supplied.

Should I pick the 2933MHz CL21 version or a slower 2666MHz module for my X11DPL-i?

The 2933MHz CL21 module runs at 2933MHz on supported boards and will also operate at 2666MHz, 2400MHz or 2133MHz if the platform requires it.

What does the 2933MHz rating actually deliver once the DIMM is installed in a Supermicro X11DPT-B?

On that motherboard the module runs at 2933MHz (PC4-23400) with CL21 latency and 1.2V, providing 128GB of registered ECC capacity per DIMM.

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