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Four green circuit boards with black memory chips, no heat spreaders

OWC

OWC 128GB (4×32GB) DDR4 2666MHz CL19 2RX8 Non-ECC SODIMM 1.2V 260-pin laptop RAM

SKU CH-BABV-9HF9V

Four 32 GB DDR4 modules running at 2666 MHz CL19 add 128 GB to laptops, mini desktops, micro servers and NAS systems

  • Capacity128GB (4 x 32GB)
  • Type260-Pin DDR4 SO-DIMM
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 128GB (4 x 32GB)

Struck-through versions exist but are not stocked here.

  • 128 GB total capacity from four 32 GB modules
  • 2666 MHz DDR4 speed with CL19 latency for responsive multitasking
  • 2 V low-voltage operation reduces power draw and heat
  • 260-pin SO-DIMM form factor fits laptops, all-in-ones and NAS units
  • Backward compatible with 2400 MHz and 2133 MHz systems

128GB DDR4 kit for laptops and NAS

This OWC kit supplies 128GB across four 32GB DDR4 2666MHz SO-DIMM modules. It targets laptops, all-in-one PCs, mini desktops and NAS units that accept 260-pin unbuffered non-ECC memory. The CL19 1.2V modules are JEDEC compliant and backward compatible with 2400MHz and 2133MHz systems.

Straightforward DIY installation

Most notebooks and compact systems expose SO-DIMM slots behind a single hatch, so the upgrade can be done with a small screwdriver in minutes. The kit contains no heat spreaders, which helps clearance in thin chassis. The usual pitfall is mixing module capacities or speeds; install all four matched sticks together and let the system train at the lowest common speed.

Verify slot count and maximum capacity

Before ordering, confirm your device has four SO-DIMM slots and supports 128GB total memory. Check the manual or vendor specification for the per-slot limit and the qualified voltage of 1.2V. Systems limited to two slots or lower maximum capacity will not use the full kit.

Highlights

  • 128 GB total capacity from four 32 GB modules
  • 2666 MHz DDR4 speed with CL19 latency for responsive multitasking
  • 2 V low-voltage operation reduces power draw and heat
  • 260-pin SO-DIMM form factor fits laptops, all-in-ones and NAS units
  • Backward compatible with 2400 MHz and 2133 MHz systems

Specifications

BrandOWC
Part Number2S6D42R8128S
Capacity128GB (4 x 32GB)
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

How can I confirm the 128GB kit is running at 2666MHz CL19 after installation?

Open Task Manager on Windows or System Report on macOS and check the memory tab; it should show 128GB total at 2666MHz with CL19 timings.

What comes in the box and do I need anything else to install the four 32GB modules?

The box contains four 32GB DDR4 260-pin SO-DIMM modules; no extra tools or cables are required for a typical laptop upgrade.

Should I choose this 128GB 2666MHz kit or a lower-capacity version for my laptop?

Pick this 128GB kit only if your laptop supports 128GB total and four SO-DIMM slots; otherwise select a smaller capacity that matches your slot count and maximum supported memory.

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

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