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Four black 288-pin DDR4 UDIMM modules, no heat spreaders

OWC

OWC 128GB (4x32GB) DDR4 2666MHz ECC Unbuffered UDIMM desktop RAM

SKU CH-C6TG-MJ8HK

A 128GB kit of four 32GB DDR4 2666MHz ECC unbuffered UDIMM modules for workstations, servers and NAS systems

  • Capacity128GB (4 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • Buffered/RegisteredUnbuffered

Capacity 128GB (4 x 32GB)

  • 128GB total capacity across four 32GB modules for heavy multitasking
  • ECC protection detects and corrects single-bit errors to safeguard data integrity
  • DDR4 2666MHz CL19 timing delivers responsive throughput for workstation workloads
  • Low 1.2V operation reduces power draw and heat in dense configurations
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

128GB ECC Kit for Workstations

This OWC kit delivers 128GB of DDR4 2666MHz memory across four 32GB unbuffered UDIMMs. It targets workstations, servers and NAS systems that require error-correcting code for data integrity. The modules operate at a standard 1.2V and conform to JEDEC PC4-21300 specifications.

Thermals and Power at 1.2V

Running at 1.2V keeps power draw low and reduces heat output in densely populated DIMM slots. No heat spreaders are fitted, so airflow across the bare PCBs handles cooling in typical chassis. The CL19 latency and 2666MHz speed operate within standard JEDEC limits without overclocking headroom.

288-Pin UDIMM Build and Compatibility

Each module uses a black 288-pin unbuffered DIMM form factor with 2Rx8 organisation. The kit is backward compatible with 2133MHz and 2400MHz platforms, allowing deployment in mixed-speed environments. Four modules fill four slots for maximum capacity on supported desktop and server boards.

Points forts

  • 128GB total capacity across four 32GB modules for heavy multitasking
  • ECC protection detects and corrects single-bit errors to safeguard data integrity
  • DDR4 2666MHz CL19 timing delivers responsive throughput for workstation workloads
  • Low 1.2V operation reduces power draw and heat in dense configurations
  • Backward compatible with 2133MHz and 2400MHz systems for flexible deployment

Caractéristiques

BrandOWC
Part Number2E6D42R8128S
Capacity128GB (4 x 32GB)
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseWorkstations, Servers, and NAS Systems
LED ColorNone

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Questions sur cet article

Will these modules fit a standard desktop motherboard with 288-pin DDR4 slots?

Yes, the kit uses the 288-pin UDIMM form factor that matches regular desktop DDR4 slots.

Can I install this ECC memory in a system that does not support ECC?

The modules will physically fit, but ECC functionality requires a motherboard and CPU that explicitly support ECC; otherwise the system will treat them as non-ECC memory.

My board only runs DDR4 at 2400 MHz — will this kit work at that speed?

The memory is backward compatible with 2400 MHz and 2133 MHz, so it will downclock automatically to match the board's maximum supported speed.

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