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Two green circuit boards with black chips, no heat spreader, 288 pins each

Crucial

Crucial CT2K16G4DFRA266 32GB (2 x 16GB) DDR4 2666 desktop RAM

SKU CH-J5T8-W261W MPN CT2K16G4DFRA266

A 32 GB dual-channel kit of two 16 GB DDR4 2666 modules running at CL19 and 1.20 V for desktop upgrades

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Capacity 32GB (2 x 16GB)

Speed DDR4 2666 (PC4 21300)

CAS Latency CL19

  • 32GB dual-channel kit for high-capacity desktop builds
  • 2666 MT/s DDR4 speed for fast data throughput
  • CL19 timing with 1.20V operation for efficient performance
  • Up to 32% bandwidth increase over previous DDR4 modules
  • Up to 40% lower power consumption for reduced system heat

32GB DDR4 2666 kit

This Crucial kit delivers 32GB of DDR4 memory in two 16GB modules rated at 2666 MT/s. It targets desktop users who need more capacity for multitasking or content work and whose platforms support DDR4 2666 operation.

Tool-free DIMM installation

The 288-pin unbuffered DIMMs install by aligning the notch and pressing until the latches click. Common issues include mixing speeds or capacities, which can force the system to run at the lowest common setting, and forgetting to enable the rated profile in BIOS.

Confirm DDR4 288-pin support

Before ordering, verify that your motherboard accepts DDR4 288-pin unbuffered non-ECC memory and can run at 1.20V. The kit has no heat spreader, so ensure adequate case airflow if the memory slots sit near large coolers.

How it compares

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

Price $87.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 32 GB (2 × 16 GB)
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $2.75 per GB
Cheaper than about 92% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameCrucial
Model nameCT2K16G4DFRA266
Total capacity32 GB (2 × 16 GB)
Product type288-Pin PC RAM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Memory timings19-19-19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.07 kg
Package size175 × 89 × 6 mm

Other versions of this model

5 more in the same range

Questions about this item

How can I verify the kit is running at 2666 MT/s with CL19 timing after installation?

Open Task Manager or CPU-Z and confirm the memory tab shows 2666 MT/s and 19-19-19 timings at 1.20V.

What exactly ships in the box and is anything else required to install it?

Two 16 GB 288-pin DDR4 modules are included; no extra cables or heat spreaders are needed for standard desktop slots.

Should I choose the 32 GB 2 x 16 GB kit or a different capacity for a dual-channel desktop build?

This 2 x 16 GB kit provides 32 GB total and is designed for dual-channel operation on DDR4 platforms.

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