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Two green laptop memory modules with gold contacts and black chips

Crucial

Crucial CT2K32G4SFD8266 64GB (2x32GB) DDR4 2666 CL19 laptop RAM

SKU CH-F96Y-HQTFP MPN CT2K32G4SFD8266

64 GB dual-channel DDR4 SO-DIMM kit running at 2666 MT/s CL19 and 1.20 V for faster multitasking

  • Capacity64GB (2 x 32GB)
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCNo

Capacity 64GB (2 x 32GB)

Struck-through versions exist but are not stocked here.

  • 64GB dual-channel kit enables heavier multitasking workloads
  • DDR4 2666 MT/s speed delivers faster data access
  • CL19 latency supports responsive application loading
  • 20V operation reduces power draw by up to 40%
  • 260-pin SO-DIMM form factor fits standard laptop slots

What this kit is and who it serves

This Crucial CT2K32G4SFD8266 kit delivers 64 GB of DDR4 laptop memory across two 32 GB SO-DIMM modules. It runs at 2666 MT/s with CL19 latency at 1.20 V. The unbuffered, non-ECC design targets standard notebook slots that accept 260-pin DDR4 memory.

Who should consider it and who should not

Builders upgrading a laptop that supports 32 GB per slot and DDR4 2666 will gain bandwidth and multitasking headroom. Systems limited to lower per-slot density or older DDR generations cannot use these modules. Buyers needing ECC or registered memory must choose a different product.

The specification that decides fit

The 260-pin DDR4 SO-DIMM form factor combined with 32 GB density per module is the decisive compatibility factor. Verify that your laptop’s memory slots accept 260-pin DDR4 and can address 32 GB per slot before purchasing.

Highlights

  • 64GB dual-channel kit enables heavier multitasking workloads
  • DDR4 2666 MT/s speed delivers faster data access
  • CL19 latency supports responsive application loading
  • 20V operation reduces power draw by up to 40%
  • 260-pin SO-DIMM form factor fits standard laptop slots

Specifications

BrandCrucial
ModelCT2K32G4SFD8266
Capacity64GB (2 x 32GB)
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
Heat SpreaderNo
FeaturesSpeeds up to 3200 MT/s and faster data rates are expected to be available as DDR4 technology matures
Increase bandwidth by up to 30%
Reduce power consumption by up to 40% and extend battery life
Faster bursts access speeds for improved sequential data throughout
Optimized for next generation processors and platforms
Shipping weight0.02 kg
Package size109 × 89 × 5 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How much power does the 1.20 V DDR4 kit draw compared with older modules?

Crucial states the DDR4 design reduces power consumption by up to 40 %, extending battery life during all-day use.

What must the laptop already have to accept these 260-pin SO-DIMMs?

The system needs two free DDR4 SO-DIMM slots and a memory controller that supports 32 GB modules at 2666 MT/s.

Will the CL19 2666 MT/s sticks run stably alongside slower DDR4 already installed?

The kit is rated for 2666 MT/s CL19 at 1.20 V; the motherboard will automatically clock all modules to the slowest speed present.

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