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Green 288-pin DDR4 DIMM with black heat spreader and gold contacts

Kingston Technology Corp.

Kingston Technology Corp. KSM26RS4/16HAI 16GB DDR4 2666 CL19 Registered ECC server RAM

SKU CH-4PKV-SQFPN MPN KSM26RS4/16HAI

16 GB DDR4 2666 registered ECC DIMM with CL19 timing for Intel and Supermicro servers

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption in critical workloads
  • Registered signal processing improves stability on heavily populated motherboards
  • 16 GB capacity extends memory headroom for virtualisation
  • DDR4 2666 speed delivers 21300 MT/s bandwidth
  • Low 1.20 V voltage reduces server power draw

16GB DDR4-2666 Registered ECC Module

This 16GB DDR4-2666 registered ECC DIMM is built for servers and workstations that require error correction and signal buffering. It operates at PC4-21300 with a CL19 latency and 1.20V voltage. The 1Rx4 organisation uses eighteen 2G x 4-bit components. It targets administrators upgrading compatible Intel or Supermicro platforms.

Thermals Noise and Power Draw

The module runs at the standard DDR4 1.20V, keeping power draw low for high-density server configurations. Registered buffering reduces electrical load on the memory controller, aiding stability under sustained workloads. No active cooling is required on the DIMM itself; system airflow handles thermals. Silent operation is inherent with no moving parts.

Upgrade From Non-ECC or Lower Capacity

This DIMM replaces non-ECC or unbuffered memory where data integrity is critical, adding single-bit error correction and parity. It upgrades systems populated with smaller registered modules to reach higher total capacity per channel. The jump is worth it when workloads demand ECC protection and registered signalling on qualified Intel S2600 or Supermicro X11 platforms.

How it compares

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

Price $314.99
Pricier than about 61% 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 $19.69 per GB
Pricier than about 80% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameKingston
Model nameKSM26RS4/16HAI
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
Power
Rated voltage1.2 V
Size & build
Shipping weight24.39 kg
Package size356 × 127 × 25 mm

Questions about this item

How do I install this 288-pin DDR4 module and what step is often missed?

Align the notch with the slot key, press firmly until both side clips click; the step often missed is seating both ends evenly so the registered buffer engages fully.

What maintenance or replacement will this 16GB ECC registered module need later?

No routine maintenance is required; replace only if system logs report correctable ECC errors rising above threshold or a DIMM fails POST.

What limit appears first under sustained load with CL19 2666MHz registered memory?

The CAS latency 19 timing ceiling limits sustained throughput before bandwidth or voltage constraints become factors.

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