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Green 288-pin DDR4 ECC registered RDIMM module with black chips

OWC

OWC 128GB DDR4 2666 ECC Registered RDIMM CL19 8Rx4 1.2V 288-pin 2R6D48R4128G

SKU CH-J549-GR7K7

Single 128GB DDR4 2666 ECC registered RDIMM for compatible Supermicro server and workstation boards

  • Capacity128GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS Latency19
  • Voltage1.2V
  • ECCYes
  • High capacity single module expands server memory to 128GB
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2666 speed with CL19 latency delivers responsive performance
  • Low 1.2V operation reduces power draw and heat output
  • Validated for Supermicro H11 and H12 series motherboards

Server-grade ECC RDIMM for Supermicro

This 128GB DDR4 2666 ECC Registered RDIMM is built for Supermicro H11 series motherboards including H11SSW-iN, H11SSW-NT, H11DST-B, H11DSU-iN and H11SSL-C. The single 288-pin module delivers 128GB capacity at PC4-21300 speed with CL19 latency and 1.2V operation. It is designed for servers, workstations and NAS systems that require registered ECC memory and will not work in standard desktop computers.

Thermals noise and power in normal use

The module operates at the standard 1.2V DDR4 voltage without a heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, contributing to stable power draw during typical multi-threaded workloads. JEDEC and ROHS compliance ensures consistent electrical characteristics across the operating temperature range. Backward compatibility with 2133MHz and 2400MHz systems allows deployment in mixed-speed configurations.

Behaviour under sustained load

ECC registered architecture corrects single-bit errors in real time, preventing data corruption during extended compute tasks such as virtualisation, database serving or scientific calculation. The 8Rx4 organisation provides high density per DIMM slot, maximising total system memory without increasing electrical loading. OWC tests every module in-house to verify long-term reliability under continuous operation. This memory cannot be mixed with unbuffered or load-reduced DIMMs.

商品特色

  • High capacity single module expands server memory to 128GB
  • ECC registered design protects data integrity in critical workloads
  • DDR4 2666 speed with CL19 latency delivers responsive performance
  • Low 1.2V operation reduces power draw and heat output
  • Validated for Supermicro H11 and H12 series motherboards

商品規格

BrandOWC
Part Number2R6D48R4128G
Capacity128GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS Latency19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank8Rx4
Heat SpreaderNo
Compatible SystemSupermicro Motherboard H11SSW-iN
Supermicro Motherboard H11SSW-NT
Supermicro Motherboard H11DST-B
Supermicro Motherboard H11DSU-iN
Supermicro Motherboard H11SSL-C

商品問答

How do I install this 288-pin DDR4 RDIMM in my Supermicro H11SSL-C and what is the common mistake?

Align the module's notch with the slot key, press firmly until both retention clips click; the common mistake is seating it at an angle so only one clip engages.

What maintenance or replacement will this 128GB ECC Registered module need over time?

No routine maintenance is required; if a correctable error count rises, replace the module, otherwise it lasts the server's life.

What limit appears first when this CL19 2666MHz memory runs sustained workloads?

The CAS latency of 19 cycles at 2666 MHz sets the timing floor; bandwidth and thermals remain within JEDEC limits for registered DIMMs.

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