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Green rectangular DDR4 RDIMM module with black chips on both sides, gold contacts, no heat spreader

OWC

OWC 2R6D42R816GB 16GB DDR4 2666MHz ECC RDIMM Dell PowerEdge C6420 R440 R540 T440

SKU CH-J8R0-BQBHT

16GB DDR4 2666MHz ECC registered RDIMM for Dell PowerEdge C6420, R440, R540 and T440 servers

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes

Capacity 16GB

  • 16GB capacity expands server memory for demanding workloads
  • DDR4 2666MHz CL19 delivers reliable throughput at 1.2V
  • ECC registered design corrects errors to protect data integrity
  • Compatible with Dell PowerEdge C6420 R440 R540 T440 systems
  • Backward compatible with 2133MHz and 2400MHz platforms

Dell PowerEdge Compatible Memory

This 16GB DDR4 ECC registered DIMM is built for Dell PowerEdge C6420 R440 R540 and T440 servers. It targets administrators upgrading or repairing those specific platforms. The module will not work in standard desktop computers and cannot be mixed with unbuffered memory.

Thermals Power And Operation

The module runs at 1.2V with no heat spreader, relying on server chassis airflow for cooling. Registered buffering and ECC add minimal latency while maintaining data integrity under continuous load. Backward compatibility with 2133MHz and 2400MHz systems allows deployment in mixed-speed configurations.

Registered ECC Requirement

This part is a 2Rx8 288-pin DDR4 2666MHz CL19 registered ECC DIMM. Buyers must confirm their system requires registered ECC memory; unbuffered or non-ECC slots will not accept it. The module replaces Dell part numbers including A9781928 AA138422 AA174381 AA940922 AA951241 AB003149 PWR5T SNPDFK3YC/16G SNPPWR5TC/16G SNPPWR5TC/16VXR and SNPVM51CC/16G.

Privalumai

  • 16GB capacity expands server memory for demanding workloads
  • DDR4 2666MHz CL19 delivers reliable throughput at 1.2V
  • ECC registered design corrects errors to protect data integrity
  • Compatible with Dell PowerEdge C6420 R440 R540 T440 systems
  • Backward compatible with 2133MHz and 2400MHz platforms

Specifikacijos

BrandOWC
Part Number2R6D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemDell PowerEdge C6420
Dell PowerEdge R440
Dell PowerEdge R540
Dell PowerEdge T440

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How do I install this 288-pin DDR4 ECC RDIMM in a PowerEdge R440 and what step is often missed?

Power down the server, open the chassis, align the notch on the module with the slot key, press firmly until both side clips click, then enter the BIOS to verify the 16GB module is detected at 2666MHz.

What maintenance or replacement will this registered ECC module need during its service life?

No routine maintenance is required; the module has no heat spreader and no moving parts. Replace it only if memory diagnostics report correctable or uncorrectable ECC errors.

What is the first limit reached when this CL19 1.2V kit runs sustained workloads?

The DDR4 2666 CL19 timing and 1.2V voltage set the bandwidth and latency ceiling; sustained loads will hit that throughput limit before any thermal throttle occurs.

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