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Four green DDR5 RDIMM sticks with gold contacts and black chips

OWC

OWC 256GB (4x64GB) DDR5 4800 CL40 ECC Registered RDIMM Dell Precision 7960XL Rack

SKU CH-DSB6-JQD6K

256 GB kit of four 64 GB DDR5-4800 CL40 ECC registered RDIMMs for Dell Precision 7960XL Rack workstations

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 256GB (4 x 64GB)

  • 256GB total capacity with four 64GB modules
  • DDR5 4800 speed rated at PC5-38400
  • CL40 CAS latency at 1.1V operating voltage
  • ECC registered 2Rx4 design for workstation reliability
  • 288-pin RDIMM form factor built for Dell Precision 7960XL Rack

Targeted Dell Precision Upgrade

This 256 GB kit comprises four 64 GB DDR5 4800 CL40 registered ECC RDIMMs built specifically for the Dell Precision 7960XL Rack workstation. The modules operate at 1.1 V and conform to JEDEC PC5-38400 standards for verified compatibility.

Thermals and Power Profile

Registered DDR5 modules run at 1.1 V, reducing per-stick power draw compared with earlier generations. No heat spreaders are fitted, so airflow through the chassis handles cooling without added noise or bulk.

Build Integration

The 288-pin RDIMM form factor installs directly into the workstation’s memory slots; ECC registered design prevents mixing with unbuffered or load-reduced DIMMs. Four slots are populated, leaving remaining channels free for future expansion within the platform limits.

Highlights

  • 256GB total capacity with four 64GB modules
  • DDR5 4800 speed rated at PC5-38400
  • CL40 CAS latency at 1.1V operating voltage
  • ECC registered 2Rx4 design for workstation reliability
  • 288-pin RDIMM form factor built for Dell Precision 7960XL Rack

Specifications

BrandOWC
Part Number4R8D52R4256S
Capacity256GB (4 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemDell Precision Workstation 7960XL Rack

Other versions of this model

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Questions about this item

How do I install the 288-pin DDR5 RDIMMs in the Dell Precision 7960XL Rack, and what step is often missed?

Power down, open the chassis, align each 288-pin module with the keyed slot, press firmly until the ejector clips lock, then populate all four channels in the order shown in the Dell service manual so the 2Rx4 ranks initialise correctly.

What maintenance or replacement will the 256 GB kit need later?

The modules have no heat spreaders and no moving parts, so no scheduled maintenance is required; replacement only occurs if a module fails or you exceed the 256 GB capacity of this four-slot kit.

What limit appears first under sustained load with these CL40 1.1 V registered DIMMs?

The CAS latency of CL40 at 4800 MT/s sets the primary timing ceiling, so sustained workloads hit latency-bound throughput before voltage or thermal limits become a factor.

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