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Green printed circuit board with black memory chips in a 288-pin DIMM form factor

OWC

OWC 2R6D44R4128G 128GB DDR4 2666MHz ECC Registered RDIMM memory upgrade

SKU CH-WDBG-2WHCC

128GB DDR4 2666MHz ECC registered RDIMM for Supermicro M11SDV server motherboards

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 128GB

  • 128GB capacity supports large server workloads
  • ECC registered design detects and corrects memory errors
  • 2666MHz DDR4 speed with CL19 latency
  • 2V operation reduces power consumption
  • Validated for Supermicro M11SDV series motherboards

Targeted Server Memory Upgrade

This 128GB DDR4 2666MHz ECC Registered RDIMM kit is built for the listed Supermicro M11SDV motherboards. It serves administrators who need maximum capacity on those specific server and workstation platforms.

Registered ECC Changes Compatibility

The registered buffer and ECC logic mean this module will not work in standard desktop boards and cannot be mixed with unbuffered DIMMs. Backward compatibility with 2133MHz and 2400MHz systems lets it slot into slower bus speeds without configuration changes.

128GB Capacity Decides Fit

A single 128GB stick at CL19 1.2V delivers the density required for memory-heavy workloads on the supported Supermicro models. Builders needing lower capacity or unbuffered memory must choose a different module.

Puntos fuertes

  • 128GB capacity supports large server workloads
  • ECC registered design detects and corrects memory errors
  • 2666MHz DDR4 speed with CL19 latency
  • 2V operation reduces power consumption
  • Validated for Supermicro M11SDV series motherboards

Especificaciones

BrandOWC
Part Number2R6D44R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard M11SDV-4C-LN4F
Supermicro Motherboard M11SDV-4CT-LN4F
Supermicro Motherboard M11SDV-8C+-LN4F
Supermicro Motherboard M11SDV-8C-LN4F
Supermicro Motherboard M11SDV-8CT-LN4F

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Preguntas sobre este artículo

Will the 4Rx4 registered ECC RDIMM need replacement if I later add more modules to the same server?

Each module is a 128GB 4Rx4 DDR4 2666MHz CL19 1.2V 288-pin ECC registered DIMM; adding identical modules is supported by the Supermicro M11SDV series up to the board's maximum capacity.

What limits sustained throughput first — the 2666MHz data rate or the CL19 latency?

The JEDEC-rated PC4-21300 2666MHz speed with CL19 timing sets the bandwidth ceiling; latency is fixed at CL19 and does not become a separate bottleneck under continuous load.

How much heat and power does a 1.2V 128GB registered DIMM produce when the server runs all day?

Operating at 1.2V with no heat spreader, the module relies on server airflow; power draw follows the DDR4 2666MHz JEDEC spec and typical registered DIMM thermal limits for 24/7 operation.

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