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Four green 260-pin DDR4 SODIMM modules in static bags

OWC

OWC 128GB (4x32GB) DDR4 2666MHz CL19 ECC SODIMM 1.2V 260-pin laptop RAM

SKU CH-G2PM-GP6AF

Four 32 GB DDR4 2666 MHz ECC SODIMM modules totalling 128 GB for laptops, all-in-ones and NAS systems

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity with four 32 GB modules
  • DDR4 2666 MHz CL19 for responsive multitasking
  • ECC error correction protects data integrity
  • 2 V operation reduces power draw
  • Backward compatible with 2400 MHz and 2133 MHz systems

128GB DDR4 ECC SODIMM kit

This OWC kit supplies 128GB of DDR4 memory in four 32GB modules for laptops, all-in-one PCs and NAS units that accept 260-pin SO-DIMMs. The ECC unbuffered design targets systems that can use error-correcting memory for data integrity.

Sustained-load behaviour

Rated at 2666MHz with CL19 timings and 1.2V operation, the modules maintain JEDEC-standard performance during extended workloads in compatible micro servers or NAS devices. Backward compatibility with 2400MHz and 2133MHz platforms allows the kit to run stably at lower speeds when the host system requires it.

Deciding specification

The 260-pin DDR4 ECC unbuffered form factor is the single detail that determines whether this kit fits; systems needing non-ECC, registered or a different pin-count memory cannot use these modules.

How it compares

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

Price $912.99
Pricier than about 92% of the 2,079 comparable items (median $70.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 94% of the 1,886 comparable items (median 16 GB).
Price per GB $7.13 per GB
Pricier than about 62% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameOWC
Part number2C6D42R8128S
Total capacity128 GB (4 × 32 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 1.2V DDR4 2666MHz CL19 kit draw during continuous all-day operation?

The modules run at 1.2 V with a CL19 latency; DDR4 at this voltage is designed for low power draw in laptops and NAS units, though exact wattage depends on the host system's memory controller and workload.

What must my laptop or NAS already support to use this 260-pin ECC SODIMM kit?

The system needs four DDR4 SO-DIMM slots, 260-pin connectors, and a memory controller that accepts unbuffered ECC modules at 2666 MHz (PC4-21300) with 1.2 V operation.

Will these 32 GB sticks down-clock reliably if I keep my older 2400 MHz or 2133 MHz modules installed?

Yes — the kit is backwards compatible with 2400 MHz and 2133 MHz speeds, so it will run at the lowest common frequency when mixed with slower DDR4 modules.

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