We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Eight green circuit boards with black chips in a row

OWC

OWC 128GB (8x16GB) DDR4 2666MHz CL19 2RX8 Non-ECC SODIMM 1.2V 260-pin laptop RAM

SKU CH-YX1V-89XWB

Eight 16 GB DDR4 2666 MHz CL19 SO-DIMM modules totalling 128 GB for laptops, all-in-ones and NAS systems

  • Total capacity128 GB (8 × 16 GB)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • 128GB total capacity across eight 16GB modules for heavy multitasking
  • 2666MHz DDR4 speed rated at PC4-21300 CL19 for responsive performance
  • 2V low-voltage operation reduces power draw and heat
  • 260-pin SO-DIMM form factor fits laptops, all-in-ones and NAS units
  • Backwards compatible with 2400MHz and 2133MHz systems for flexible upgrades

OWC 128GB DDR4 SO-DIMM kit

This kit supplies 128GB of DDR4 laptop memory across eight 16GB modules. It runs at 2666MHz with CL19 latency and 1.2V operation. The 260-pin SO-DIMM form factor fits compatible notebooks, all-in-one PCs and NAS units. Non-ECC unbuffered design suits consumer and light commercial workloads.

Ideal for high-capacity laptop and NAS upgrades

Content creators and power users who need the maximum supported memory in an eight-slot system will benefit. Builders with only two or four slots cannot use the full kit. Systems requiring ECC or registered modules should look elsewhere. The dual-channel kit labelling applies to paired operation, not to the eight-module count.

Verify slot count and DDR4 support before ordering

Confirm the target device accepts eight 260-pin SO-DIMMs and runs DDR4 at 2666MHz, 2400MHz or 2133MHz. Check the manufacturer’s qualified-vendor list for 16GB 2Rx8 density support. Ensure the BIOS can address the full 128GB capacity. No heat spreaders are included, so verify chassis airflow.

How it compares

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

Price $732.99
Pricier than about 91% of the 2,079 comparable items (median $70.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 94% of the 1,886 comparable items (median 16 GB).
Price per GB $5.73 per GB
Typical for this category: the median of 1,886 items is $5.94 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 nameOWC
Part number2S6D42R8128K
Total capacity128 GB (8 × 16 GB)
Product type260-Pin DDR4 SO-DIMM
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

Does my laptop need eight 260-pin DDR4 SO-DIMM slots to use all 128 GB from this kit?

Yes, the kit contains eight 16 GB modules, so the system must provide eight DDR4 SO-DIMM sockets to install the full capacity.

Will these 2666 MHz CL19 modules run reliably if my notebook only supports 2400 MHz or 2133 MHz memory?

The modules are backward compatible with 2400 MHz and 2133 MHz speeds, so they will operate at the lower frequency your platform requires.

How can I verify the kit is running at 2666 MHz with CL19 timings after installation?

Check the memory speed and CAS latency reported in your BIOS or a system-information tool such as CPU-Z; they should show 2666 MHz and CL19 when the system is configured for the rated profile.

More in Laptop RAM

Similar items