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Green rectangular DDR5 memory module with gold contacts and black chips, no heat spreader

OWC

OWC 64GB DDR5 5600 CL46 2Rx4 288-pin 1.1V ECC Registered RDIMM Dell Precision 7875

SKU CH-QQ7W-WSYT1

A 64GB DDR5 5600 ECC registered RDIMM built for the Dell Precision 7875 workstation

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • CAS latency46
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • 64 GB capacity handles heavy workloads and large datasets
  • ECC registered design detects and corrects memory errors for data integrity
  • DDR5 5600 speed delivers high bandwidth for demanding applications
  • Single 2Rx4 module simplifies upgrades in Dell Precision 7875
  • 1 V operation reduces power draw and heat output

Dell Precision 7875 upgrade

This 64GB DDR5 module is built for the Dell Precision 7875 workstation. It delivers ECC registered operation at 5600MHz with CL46 latency. The single DIMM adds substantial capacity for memory-intensive workloads. It is not compatible with standard desktop computers or unbuffered memory configurations.

Registered ECC integration

The 288-pin RDIMM requires a platform that supports registered ECC DDR5 at 1.1V. It cannot be mixed with unbuffered or load-reduced modules in the same system. The single-rank 2Rx4 organisation leaves additional slots free for further expansion. JEDEC compliance ensures the module meets the workstation's qualified-vendor requirements.

Sustained error-corrected throughput

Under continuous load the registered buffer reduces electrical loading on the memory controller. On-die ECC corrects single-bit errors without halting the workflow. The 1.1V operating voltage keeps power draw stable during extended compute sessions. CL46 timing remains consistent across the full 64GB capacity.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,903.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
CAS latency 46
Higher than about 90% of the 483 comparable items (median 22).
Price per GB $29.75 per GB
Pricier than about 85% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number5R6D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Memory
CAS latency46
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell Precision 7875

Other versions of this model

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Questions about this item

Will the 5600 MT/s speed and CL46 latency hold steady during continuous ECC workloads?

The module is rated at 5600 MT/s with CL46 latency at 1.1 V. DDR5 PMIC on the DIMM manages voltage regulation, so the rated speed and latency are maintained within JEDEC limits during sustained operation.

How much heat does a registered 64 GB stick produce when the Precision 7875 runs all day?

Registered DDR5 at 1.1 V typically draws a few watts per module. The Precision 7875 chassis uses directed airflow across the DIMM slots, so the stick stays within thermal limits without a heat spreader.

Does the Precision 7875 motherboard need a specific BIOS revision or CPU to accept this 2Rx4 registered DIMM?

The Dell Precision 7875 is qualified for 288-pin DDR5 5600 ECC RDIMM. Install the module in a supported slot and the system will recognise the 64 GB capacity at 5600 MT/s.

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