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Green bare circuit board DDR4 DIMM with black memory chips and gold edge connector

Kingston Technology Corp.

Kingston Technology Corp. KSM26RS4/16HDI 16 GB DDR4 2666 CL19 ECC Registered 288-pin DIMM

SKU CH-Y88T-CA92P MPN KSM26RS4/16HDI

16 GB DDR4-2666 ECC registered server DIMM with CL19 latency and 1.20 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • Buffer typeRegistered

Capacity 16GB

Rank 1Rx4

Model Hynix

  • ECC protection prevents data corruption in critical workloads
  • Registered signal reduces electrical load on the memory controller
  • 2666 MHz DDR4 speed handles demanding server applications
  • CL19 latency delivers reliable response times
  • 16 GB capacity supports virtualization and large datasets

Server DDR4-2666 ECC Registered DIMM

This 16 GB DDR4-2666 module is built for servers and workstations that require error-correcting registered memory. It targets administrators expanding capacity in systems qualified for PC4-21300 speeds. The registered design reduces electrical load on the memory controller for stable operation.

Capacity and headroom at 16 GB CL19

A single 16 GB rank handles growing databases, additional virtual machines and larger application datasets. The CL19 timing at 2666 MHz delivers consistent throughput for memory-bound workloads. Headroom ends when the platform reaches its maximum DIMM slots or total memory limit.

288-pin registered fit for qualified platforms

The 288-pin DIMM installs only in DDR4 slots that support registered ECC operation at 1.20 V. It requires a server or workstation motherboard validated for registered modules. The lack of a heat spreader keeps the profile low for dense chassis configurations.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $153.99
Cheaper than about 55% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $9.62 per GB
Pricier than about 66% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameKingston
Product linePremier Series
Model nameKSM26RS4/16HDI
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Memory timings19-19-19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.14 kg
Package size178 × 76 × 13 mm

Other versions of this model

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Questions about this item

Will this 16 GB DDR4-2666 CL19 registered module work alongside my existing DDR4 registered ECC DIMMs?

This module runs at DDR4-2666 with CL19 timing and 1.20 V. When mixed with other registered ECC DIMMs, the system will operate at the speed of the slowest installed module.

How can I verify the 2666 MHz speed and CL19 latency are active after installation?

Check the memory speed and CAS latency reported in your server BIOS or UEFI, or use a tool such as CPU-Z or dmidecode to confirm 2666 MT/s and 19-19-19 timings.

Does the box include only the 288-pin DIMM or are any cables or brackets supplied?

The package contains the single 16 GB 288-pin DDR4 registered ECC DIMM. No cables, brackets or additional accessories are included.

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