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Green 288-pin DDR4 DIMM module with black chips, no heat spreader

Kingston Technology Corp.

Kingston Technology Corp. KSM26RD8/16HDI 16GB DDR4 2666 CL19 Registered ECC Server RAM

SKU CH-HTRG-KMWFJ MPN KSM26RD8/16HDI

16 GB DDR4 server memory with ECC, registered signalling, 2666 MHz speed and CL19 latency

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

Capacity 16GB

Rank 2Rx8

Model Hynix

  • 16 GB DDR4 capacity supports larger databases and virtual workloads
  • Registered ECC design detects and corrects data errors for server uptime
  • 2666 MHz CL19 timing delivers responsive throughput for multi-application environments
  • 20 V operation reduces electrical load on the memory controller
  • 288-pin DIMM form factor ensures broad server platform compatibility

Server DDR4-2666 ECC registered module

This 16 GB DIMM delivers DDR4-2666 speed at CL19 with registered signal processing and on-die ECC. It is built for servers and workstations that require error-correcting memory to maintain data integrity under sustained workloads such as virtualization, databases or multi-user applications. The module plugs into standard 288-pin DDR4 slots and operates at 1.20 V. It is not suited for consumer desktop boards that lack registered ECC support.

Thermals and power in normal operation

Running at the rated 1.20 V, the module draws minimal power and produces low heat without a heat spreader. Registered buffering reduces electrical load on the memory controller, helping keep system thermals stable during extended uptime. Passive cooling relies on chassis airflow; no active fan is attached to the DIMM itself. Acoustic output is silent because there are no moving parts on the module.

Build integration and system fit

The 288-pin DIMM fits any server platform that accepts registered DDR4 ECC memory at 2666 MT/s. Dual-rank 2Rx8 organization lets you populate channels efficiently while leaving remaining slots open for future capacity expansion. Compatibility depends on the motherboard qualified-vendor list; the module does not work in unbuffered or non-ECC consumer sockets.

How it compares

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

Price $251.99
Pricier than about 56% 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 $15.75 per GB
Pricier than about 76% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameKingston
Model nameKSM26RD8/16HDI
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 rank2Rx8
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

How do I install the 288-pin DDR4 DIMM and what step is often missed?

Align the notch on the module with the slot key, press firmly until both retention clips click, and ensure the registered module is seated in a slot that supports registered memory.

What maintenance or replacement will the 16GB DDR4 2666 CL19 module need later?

No routine maintenance is required; replace the module only if memory diagnostics report correctable ECC errors that become uncorrectable over time.

What limit appears first when the 2Rx8 registered ECC module runs sustained workloads at 1.20V?

The CL19 latency at 2666 MHz sets the throughput ceiling before thermal throttling becomes a factor on this unbuffered-heatsink design.

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