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Green rectangular circuit board with black memory chips and gold edge connectors

Kingston Technology Corp.

Kingston Technology Corp. KSM26ES8/8MR 8GB DDR4 2666 CL19 ECC Unbuffered 288-pin DIMM server RAM

SKU CH-DHEZ-GY1GG MPN KSM26ES8/8MR

8GB DDR4 2666 ECC unbuffered DIMM with CL19 latency for server workloads

  • Capacity8GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.20V

Capacity 8GB

Rank 1Rx8

Option Micron

  • 8 GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers fast data throughput
  • ECC protection corrects single-bit errors automatically
  • Unbuffered design reduces latency for responsive operation
  • CL19 timing ensures stable performance at 1.20 V

8 GB DDR4-2666 ECC DIMM for servers

This 8 GB DDR4 module runs at 2666 MHz with CL19 timings and 1.20 V operation. It uses a 288-pin unbuffered design with ECC and a single 1Rx8 rank. The stick is built on Micron components and carries the Kingston Premier Series label.

Suits single-slot upgrades; not for registered slots

Builders adding capacity to a board that accepts unbuffered ECC DIMMs can use this module directly. Systems that require registered or load-reduced memory cannot use it. Buyers needing more than 8 GB per slot should look at higher-density parts.

The deciding spec is unbuffered ECC

The module is unbuffered with ECC, so it only works in platforms that explicitly support that combination. Registered-only or non-ECC-only platforms will not accept it. Check the motherboard manual for unbuffered ECC support before purchase.

Highlights

  • 8 GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers fast data throughput
  • ECC protection corrects single-bit errors automatically
  • Unbuffered design reduces latency for responsive operation
  • CL19 timing ensures stable performance at 1.20 V

Specifications

BrandKingston
SeriesPremier Series
ModelKSM26ES8/8MR
Capacity8GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19
Voltage1.20V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
Features8GB 2666MHZ DDR4 ECC CL19 DIMM 1RX8 MICRON R
Shipping weight0.09 kg
Package size178 × 76 × 8 mm

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Questions about this item

How can I verify the module is running at 2666 MHz with CL19 timing after installation?

Enter the system BIOS or UEFI and confirm the memory frequency reads 2666 MHz with timings of 19-19-19 at 1.20 V; the ECC status should also show as enabled for this unbuffered DIMM.

What comes in the box and is any extra hardware needed for installation?

The package contains the single 8 GB 288-pin DDR4 DIMM; no additional brackets, cables or cooling parts are required — just an available DDR4 DIMM slot on a compatible server board.

Why choose the 8 GB 1Rx8 version over other capacities or ranks?

This 8 GB single-rank 1Rx8 module delivers 2666 MHz speed at CL19 with ECC, offering a balanced density-per-slot option for servers that support unbuffered DDR4 memory.

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