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Green printed circuit board with black memory chips and gold edge contacts, 288-pin DDR4 RDIMM form factor

OWC

OWC 2R9D48R4128G 128GB DDR4 2933 ECC Registered RDIMM for ASRock EP2C621D12 WS memory upgrade

SKU CH-GZQM-4C1ZB

128GB DDR4 2933 ECC registered RDIMM for ASRock workstation and server boards

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS Latency21
  • Voltage1.2V
  • ECCYes
  • 128 GB single-module capacity for high-density server upgrades
  • ECC registered design detects and corrects data errors in critical workloads
  • DDR4 2933 speed with CL21 latency matches PC4-23400 specification
  • 2 V operation reduces power draw in multi-DIMM configurations
  • Validated for ASRock EP2C621D12 WS and compatible workstation boards

128 GB ECC Registered DDR4 for ASRock EP2C621D12 WS

This single 128 GB DDR4 2933 module uses an 8Rx4 registered design with ECC and operates at 1.2 V. It is built for the ASRock EP2C621D12 WS workstation motherboard and the listed compatible server boards.

Sustained CL21 2933 operation

Registered buffering and ECC keep data integrity stable during long compute runs on workstations and servers. The module also runs at 2133, 2400 or 2666 speeds when the platform requires a lower frequency.

288-pin RDIMM without heat spreader

The bare 288-pin form factor fits dense DIMM arrays where tall spreaders would block airflow. It cannot be mixed with unbuffered or load-reduced modules and is not compatible with standard desktop systems.

Points forts

  • 128 GB single-module capacity for high-density server upgrades
  • ECC registered design detects and corrects data errors in critical workloads
  • DDR4 2933 speed with CL21 latency matches PC4-23400 specification
  • 2 V operation reduces power draw in multi-DIMM configurations
  • Validated for ASRock EP2C621D12 WS and compatible workstation boards

Caractéristiques

BrandOWC
Part Number2R9D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2933 (PC4 23400)
CAS Latency21
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
Heat SpreaderNo
Compatible SystemASRock Workstation Motherboard EP2C621D12 WS
ASRock Server Motherboard EP2C622D24LM2
ASRock Server Motherboard EPC621D4I-2M
ASRock Server Motherboard EPC621D6U-2T16R
ASRock Server Motherboard WC621D8A-2T

Questions sur cet article

How much heat or power does the 128GB DDR4 2933 registered module draw when running continuously?

It operates at 1.2V without a heat spreader, so power draw and heat output stay low during all-day workloads.

What motherboard must I already own for this 288-pin ECC RDIMM to work?

It is validated for the ASRock EP2C621D12 WS and also listed for EP2C622D24LM2, EPC621D4I-2M, EPC621D6U-2T16R and WC621D8A-2T.

Will this 8Rx4 CL21 module run alongside slower DDR4 DIMMs I already have installed?

Yes, the spec notes backward compatibility with 2133MHz, 2400MHz and 2666MHz DDR4, so it will down-clock to match existing sticks.

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