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Two green DDR4 SO-DIMM sticks with black chips

Corsair

Corsair CMSX16GX4M2A2666C18 Vengeance 16GB (2 x 8GB) DDR4 2666 CL18 laptop RAM

SKU CH-BZ4Q-YQA40 MPN CMSX16GX4M2A2666C18

16 GB DDR4 SO-DIMM kit running at 2666 MT/s with CL18 timings and 1.2 V operation

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL18
  • Memory timings18-19-19-39
  • Rated voltage1.2 V
  • Buffer typeUnbuffered

Capacity 16GB (2 x 8GB)

Speed DDR4 2666 (PC4 21300)

CAS Latency CL18

  • 16 GB dual-channel kit for multitasking headroom
  • DDR4 2666 speed for responsive system performance
  • CL18 18-19-19-39 timings tuned for low latency
  • 20 V operation reduces power draw and heat
  • 260-pin SO-DIMM fits standard laptop memory slots

What this kit delivers

This is a 16 GB DDR4 SO-DIMM kit composed of two 8 GB modules rated at 2666 MT/s with CL18 timings. It runs at the standard 1.20 V and uses the unbuffered 260-pin layout required by most modern laptops.

Compatibility checks

Verify that your notebook accepts DDR4 SO-DIMM modules and has two free slots or can replace the existing pair. Confirm the platform supports 2666 MT/s operation; older DDR3-only systems will not fit these modules. No manual BIOS setup is needed for the rated speed.

Who should buy

Suitable for owners of 6th generation Intel Core i5 or i7 notebooks wanting a straight-forward capacity and speed upgrade. Not for buyers whose laptops use DDR3 SO-DIMMs, require ECC or registered memory, or need a single 16 GB stick instead of a matched pair.

How it compares

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

Price $105.99
Pricier than about 62% of the 2,079 comparable items (median $70.99).
Total capacity 16 GB (2 × 8 GB)
Typical for this category: the median of 1,886 items is 16 GB.
Price per GB $6.62 per GB
Pricier than about 57% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameCORSAIR
Product lineVengeance
Model nameCMSX16GX4M2A2666C18
Total capacity16 GB (2 × 8 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL18
Memory timings18-19-19-39
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.03 kg
Package size127 × 74 × 13 mm

Other versions of this model

5 more in the same range

Questions about this item

Does the kit include both 8 GB SO-DIMMs or do I need to buy a second stick separately?

The kit contains two 8 GB modules for a total of 16 GB, so no additional sticks are required.

Should I choose this CL18 2666 MHz kit or a faster CL16 version for my notebook?

This kit runs at DDR4 2666 with CL18 18-19-19-39 timings at 1.20 V; select it if your platform specifies 2666 MHz and you want plug-and-play operation.

Will the rated 2666 MHz speed actually run at that frequency once installed in my laptop?

Most notebooks automatically configure the modules to DDR4 2666 (PC4 21300) without manual setup, delivering the rated speed out of the box.

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