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Green rectangular DDR5 ECC RDIMM module with black chips no heat spreader 288 pins

OWC

OWC 64GB DDR5-4800 CL40 2Rx4 ECC RDIMM Dell PowerEdge R660XS R760XS

SKU CH-RWGH-YQ9ZD

A single 64 GB DDR5-4800 CL40 ECC registered RDIMM for Dell PowerEdge R660XS and R760XS servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx4

Capacity 64GB

  • ECC registered design protects data integrity in servers
  • 64 GB capacity expands memory for demanding workloads
  • DDR5 4800 speed delivers high bandwidth at 1.1 V
  • 2Rx4 dual-rank layout increases density per slot
  • Compatible with Dell PowerEdge R660XS and R760XS

64GB DDR5 ECC RDIMM for Dell PowerEdge

This 64GB DDR5-4800 CL40 module is an ECC registered DIMM built for Dell PowerEdge R660XS and R760XS servers. It delivers 4800 MT/s at 1.1V with a 2Rx4 organisation. The part replaces Dell part numbers AC239379 and SNPJ52K5C/64G.

Installation notes

The 288-pin RDIMM seats in standard DDR5 server slots and requires no tools beyond normal anti-static precautions. It will not work in desktop PCs or with unbuffered or load-reduced memory, so mixing types must be avoided. The module has no heat spreader.

Compatibility checklist

Verify that the target system is a Dell PowerEdge R660XS or R760XS and that the memory configuration allows registered ECC DIMMs. Confirm the server can accept 64GB single-rank modules at 4800 MT/s and 1.1V. Check existing DIMM population rules before ordering.

How it compares

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

Price $1,325.99
Pricier than about 63% 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).
Price per GB $20.72 per GB
Pricier than about 66% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R464 GB
Total capacity64 GB
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell PowerEdge R660XS
Dell PowerEdge R760XS

Other versions of this model

5 more in the same range

Questions about this item

How do I confirm the DDR5-4800 module runs at PC5-38400 CL40 1.1V after installing it in a PowerEdge R660XS?

Enter the system BIOS or iDRAC interface and verify the memory speed reads 4800 MT/s, CAS latency shows CL40, and voltage reports 1.1 V for the installed DIMM.

What ships with the 64GB ECC RDIMM and what extra parts are required for a Dell PowerEdge R760XS upgrade?

The box contains one 64GB 288-pin DDR5 ECC registered DIMM; no additional cables, brackets or cooling parts are needed for installation in the R760XS.

Which OWC part number should I order when replacing Dell part AC239379 SNPJ52K5C/64G in a PowerEdge R660XS?

Order OWC part number 4R8D52R464GB — it is the direct 64GB DDR5-4800 CL40 2Rx4 ECC registered replacement for that Dell part number.

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