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Four green DDR5 RDIMM modules in anti-static tray

OWC

OWC 128GB (4x32GB) DDR5 4800 CL40 ECC Registered RDIMM Dell PowerEdge Kit

SKU CH-NV4W-DRBH6

A 128 GB DDR5 ECC registered RDIMM kit of four 32 GB modules at 4800 MT/s CL40 for Dell PowerEdge servers

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Memory rank2Rx8

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw in dense configurations
  • Validated for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615

Capacity and Compatibility

This kit supplies 128 GB across four 32 GB DDR5 4800 registered ECC modules. It is built for Dell PowerEdge C6600, C6620, MX760C, R660 and R6615 servers and will not work in standard desktop computers or with unbuffered or load-reduced memory.

Speed and Headroom

The modules run at 4800 MT/s with CL40 latency at 1.1 V, providing JEDEC-standard bandwidth for virtualization, database and compute workloads. Capacity limits are set by the server's DIMM slots and memory-controller maximums; this kit fills four slots.

Kit Composition and Assurance

Four matched 2Rx8 registered DIMMs ship together for single-install population of a memory channel set. OWC validates each module to meet or exceed OEM specifications and backs the kit with a limited lifetime warranty and free technical support.

How it compares

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

Price $3,326.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.99 per GB
Pricier than about 71% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number4R8D52R8128S
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 ECC RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell PowerEdge C6600
Dell PowerEdge C6620
Dell PowerEdge MX760C
Dell PowerEdge R660
Dell PowerEdge R6615

Other versions of this model

5 more in the same range

Questions about this item

Can I add these 4800 CL40 registered ECC modules to a Dell PowerEdge R660 that already has OEM DDR5 RDIMMs installed?

Yes, the kit is validated for the R660 and other listed PowerEdge models. All four 32 GB modules run at 4800 MT/s with CL40 timing and 1.1 V, matching the platform's DDR5 registered ECC requirements.

How do I verify the kit is running at 4800 MT/s with ECC active after installation?

Check the system BIOS or iDRAC memory inventory — it should show each slot populated with 32 GB DDR5 4800 registered ECC DIMMs, total 128 GB, and report ECC enabled with no correctable errors.

Does the 4R8D52R8128S kit include a heat spreader or any cables, or do I need to buy them separately?

The modules have no heat spreader and no cables are included; the kit contains only the four 288-pin DDR5 32 GB registered ECC RDIMMs.

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