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Two green 288-pin DDR5 RDIMM modules, no heat spreaders

OWC

OWC 128GB (2x64GB) DDR5 4800 CL40 2Rx4 288-pin 1.1V ECC Registered RDIMM memory upgrade

SKU CH-PQ0C-FR644

128 GB DDR5-4800 ECC registered RDIMM kit, two 64 GB modules at CL40 and 1.1 V, validated for Dell PowerEdge R660XS and R760XS servers

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • ECC registered design protects data integrity in Dell PowerEdge R660XS and R760XS servers
  • 128 GB total capacity delivered as two 64 GB modules for maximum slot efficiency
  • DDR5 4800 speed with CL40 latency matches OEM specifications for reliable operation
  • 1 V JEDEC-standard voltage reduces power draw while maintaining stability
  • 2Rx4 registered architecture ensures compatibility with server memory controllers

Targeted Dell PowerEdge Server Upgrade

This OWC kit provides 128 GB of DDR5 registered ECC memory in a matched pair of 64 GB modules. It is built for Dell PowerEdge R660XS and R760XS servers that require 288-pin RDIMMs running at 4800 MT/s with CL40 timing at 1.1 V. The modules follow JEDEC PC5-38400 standards and carry a limited lifetime warranty from the manufacturer.

Suitable for Server Administrators Only

The memory is designed for IT professionals who manage the listed Dell PowerEdge models and need registered ECC modules with a 2Rx4 organisation. It will not work in standard desktop PCs, consumer laptops, or workstations that accept only unbuffered non-ECC DDR5. Buyers who need load-reduced ECC DIMMs or a different capacity per module should look at other qualified options.

Registered ECC DDR5 RDIMM Form Factor

The decisive specification is the 288-pin registered ECC RDIMM form factor combined with DDR5 4800 CL40 operation at 1.1 V. Only systems that explicitly support registered ECC DDR5 in this exact configuration can use the kit; any other memory type or generation will be physically or electrically incompatible.

Points forts

  • ECC registered design protects data integrity in Dell PowerEdge R660XS and R760XS servers
  • 128 GB total capacity delivered as two 64 GB modules for maximum slot efficiency
  • DDR5 4800 speed with CL40 latency matches OEM specifications for reliable operation
  • 1 V JEDEC-standard voltage reduces power draw while maintaining stability
  • 2Rx4 registered architecture ensures compatibility with server memory controllers

Caractéristiques

BrandOWC
Part Number4R8D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemDell PowerEdge R660XS
Dell PowerEdge R760XS

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Questions sur cet article

What does the 4800 MT/s rating deliver inside a Dell PowerEdge R660XS or R760XS?

The kit runs at DDR5 4800 with CL40 timing and 1.1 V, providing the standard JEDEC data rate for those servers.

How does the PC5-38400 designation relate to the module interface?

PC5-38400 is the JEDEC peak bandwidth label for DDR5 4800 on the 288-pin registered DIMM form factor used here.

What physical clearance and slot requirements apply to these 64 GB RDIMMs?

Each module is a 288-pin ECC registered DIMM with 2Rx4 organisation and no heat spreader, designed for the DDR5 slots in R660XS and R760XS.

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