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Green circuit board with black memory chips, no heat spreader

Crucial

Crucial CT16G4DFRA266 16GB DDR4 2666 desktop RAM

SKU CH-8BA2-01A6B MPN CT16G4DFRA266

16GB DDR4 desktop module at 2666 MT/s with CL19 timing and 1.20V operation

  • Capacity16GB
  • Type288-Pin PC RAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.20V

Capacity 16GB

Speed DDR4 2666 (PC4 21300)

CAS Latency CL19

  • 16 GB capacity supports demanding multitasking
  • 2666 MT/s DDR4 speed enables fast data throughput
  • CL19 19-19-19 timing delivers responsive memory access
  • 20 V operation reduces power consumption by up to 40 %
  • Unbuffered 288-pin design fits standard desktop motherboards

16GB DDR4 2666 desktop module

This 16GB unbuffered DDR4 module runs at 2666 MT/s with CL19 timings and a 1.20V operating voltage. It fits standard 288-pin desktop slots and is suited to system builders upgrading a single channel or adding capacity to an existing DDR4 platform.

No heat spreader or software bundle

The module ships without a heat spreader, keeping the profile low for tight clearance around large CPU coolers. There is no bundled software or lighting controller; the only changes are the 32% bandwidth increase and 40% power reduction quoted for DDR4 technology over the previous generation.

Simple slot-in install, check BIOS first

Installation is a standard DIMM insertion: align the notch, press until the latches click, then power on. Most issues arise when the motherboard BIOS defaults to a lower speed or when mixing modules with different timings, so verify the memory runs at 2666 MT/s in firmware after boot.

Highlights

  • 16 GB capacity supports demanding multitasking
  • 2666 MT/s DDR4 speed enables fast data throughput
  • CL19 19-19-19 timing delivers responsive memory access
  • 20 V operation reduces power consumption by up to 40 %
  • Unbuffered 288-pin design fits standard desktop motherboards

Specifications

BrandCrucial
ModelCT16G4DFRA266
Capacity16GB
Type288-Pin PC RAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
Heat SpreaderNo
FeaturesSpeeds up to 2666 MT/s and faster data rates are expected to be available as DDR4 technology matures
Increase bandwidth by up to 32%
Reduce power consumption by up to 40%
Faster burst access speeds for improved sequential data throughout
Optimized for next generation processors and platforms
Shipping weight0.03 kg
Package size517 × 254 × 6 mm

Other versions of this model

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Questions about this item

Will the module without a heat spreader need extra cooling or replacement over time?

The module runs at 1.20V without a heat spreader; standard case airflow is sufficient and no scheduled replacement is required.

What limits sustained throughput first on this CL19 2666 MT/s kit?

The 19-19-19 timing at 2666 MT/s sets the latency ceiling before bandwidth saturates under continuous load.

How much power and heat does the 1.20V 16GB stick produce during all-day operation?

At 1.20V the stick draws minimal power and runs cool; the vendor notes up to 40% lower consumption versus older DDR4 designs.

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