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OWC

OWC 64GB (4×16GB) DDR4 2666MHz CL19 1.2V 260-pin SODIMM laptop RAM

SKU CH-PJRC-S8CGS

A 64GB kit of four 16GB DDR4 2666MHz CL19 SODIMM modules for laptops and NAS systems

  • Capacity64GB (4 x 16GB)
  • Type260-Pin DDR4 SO-DIMM
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 64GB (4 x 16GB)

Struck-through versions exist but are not stocked here.

  • 64GB total capacity from four 16GB modules
  • 2666MHz DDR4 speed with CL19 latency
  • 2V low voltage for efficient operation
  • 260-pin SODIMM fits laptops and NAS systems
  • Backward compatible with 2400MHz and 2133MHz systems

64GB DDR4 SODIMM kit for laptops and NAS

This kit supplies four 16GB DDR4 2666MHz CL19 modules that run at 1.2V on a 260-pin SO-DIMM form factor. It targets laptops, all-in-one PCs and NAS units that accept non-ECC unbuffered memory and need a straightforward capacity increase.

Check slot count and maximum supported capacity

The kit occupies four SO-DIMM slots, so verify your device has four available sockets and that its firmware or chipset permits 64GB total. The modules are backward compatible with 2400MHz and 2133MHz systems, but the host must support DDR4 SO-DIMM memory and non-ECC operation.

Low voltage keeps thermals and power draw modest

At 1.2V the modules generate little heat and do not require a heat spreader, making them suitable for thin laptops and fanless NAS enclosures. Power consumption scales with the four-module population, yet remains within standard DDR4 SO-DIMM limits for quiet, cool operation.

Highlights

  • 64GB total capacity from four 16GB modules
  • 2666MHz DDR4 speed with CL19 latency
  • 2V low voltage for efficient operation
  • 260-pin SODIMM fits laptops and NAS systems
  • Backward compatible with 2400MHz and 2133MHz systems

Specifications

BrandOWC
Part Number2S6D42R8064S
Capacity64GB (4 x 16GB)
Type260-Pin DDR4 SO-DIMM
CAS LatencyCL19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
Heat SpreaderNo
Recommend UseLaptops, All-in-One Systems, and NAS Systems

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

Does the kit include everything needed for a laptop or NAS upgrade, or must anything be purchased separately?

The package contains four 16 GB DDR4 2666 MHz CL19 1.2 V 260-pin SODIMM modules; no additional parts are required for installation.

How do I decide between this 64 GB kit and a smaller capacity?

Choose this 64 GB kit when your system has four SODIMM slots and the maker lists 64 GB as the maximum supported memory.

What does the 2666 MHz rating mean once the memory is installed?

The modules run at 2666 MHz by default and will automatically down-clock to 2400 MHz or 2133 MHz if the platform only supports those speeds.

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