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Green 288-pin DDR4 ECC registered RDIMM module with black chips, no heat spreader

OWC

OWC 16GB DDR4 2666MHz ECC Registered RDIMM memory upgrade

SKU CH-C6RT-XRCGD

16 GB DDR4 2666 MHz ECC registered RDIMM for Dell PowerEdge R6415, R7415, R7425 and XR2 servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx8
  • 16 GB DDR4 ECC registered memory protects data integrity for Dell PowerEdge servers
  • 2666 MHz PC4-21300 CL19 speed delivers responsive performance in R6415, R7415, R7425 and XR2
  • 2 V low-voltage operation reduces power draw in dense server deployments
  • 288-pin 2Rx8 RDIMM form factor installs directly into compatible Dell PowerEdge slots
  • Replaces Dell part numbers including A9781928, AA138422 and SNPPWR5TC/16G for straightforward upgrades

16GB DDR4 2666MHz ECC Registered RDIMM

This 16GB DDR4 module runs at 2666MHz with CL19 latency and 1.2V operation. It is a 288-pin registered DIMM with ECC and a 2Rx8 rank configuration. The memory is designed for server and workstation platforms that require registered ECC technology.

For Dell PowerEdge R6415 R7415 R7425 XR2 servers

This upgrade fits Dell PowerEdge R6415, R7415, R7425 and XR2 systems. It replaces Dell part numbers including A9781928, AA138422 and SNPDFK3YC/16G. Buyers needing unbuffered memory for standard desktops or laptops cannot use this registered ECC module.

Registered ECC DDR4 at 2666MHz CL19

The registered ECC design with CL19 timing at 2666MHz is the decisive specification. Systems must support DDR4 registered ECC RDIMMs; mixing with unbuffered memory is not supported. Backward compatibility extends to 2133MHz and 2400MHz bus speeds.

How it compares

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

Price $103.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.50 per GB
Cheaper than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number2R6D42R816 GB
Total capacity16 GB
Product type288-Pin DDR4 ECC RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsDell PowerEdge R6415
Dell PowerEdge R7415
Dell PowerEdge R7425
Dell PowerEdge XR2

Other versions of this model

5 more in the same range

Questions about this item

Does the PowerEdge R7415 need a specific CPU or motherboard revision to accept this 2666MHz ECC registered RDIMM?

The module is listed as compatible with the PowerEdge R7415, R6415, R7425 and XR2. It requires a system that supports DDR4 ECC registered memory.

Can I mix these 2666MHz CL19 registered modules with the 2400MHz ECC RDIMMs already installed in my R6415?

The product notes backward compatibility with 2133MHz and 2400MHz speeds, but registered ECC memory cannot be mixed with unbuffered modules.

After installing the 16GB 2Rx8 RDIMM, what should I check in the BIOS to confirm it is running at 2666MHz with ECC active?

Verify the memory speed shows 2666MHz (PC4-21300), the CAS latency reads CL19, voltage is 1.2V and ECC status is reported as enabled.

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