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OWC

OWC 4GB DDR4 2666 CL19 260-pin SODIMM laptop RAM

SKU CH-MQ8D-9TK1M

4GB DDR4 2666 CL19 SODIMM module for laptops, all-in-ones and NAS systems, backward compatible with 2400 and 2133MHz speeds

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Recommended forLaptops, All-in-One Systems, and NAS Systems
  • 4 GB capacity adds responsive multitasking headroom
  • DDR4 2666 MHz speed matches system bus for stable throughput
  • CL19 latency keeps data access quick and predictable
  • 2 V operation reduces power draw and heat in compact chassis
  • 260-pin SODIMM form factor fits laptops, all-in-ones and NAS units

4GB DDR4 2666 SODIMM module

This 4 GB DDR4 SODIMM runs at 2666 MHz with CL19 latency and 1.2 V operation. The 260-pin unbuffered non-ECC stick is built to JEDEC PC4-21300 standards. It is intended as a drop-in upgrade for laptops, all-in-one PCs, mini desktops and compatible NAS units.

Suits owners of DDR4-2666 systems needing a single

The module fits any 260-pin DDR4 slot that accepts PC4-21300 speeds and will also run at 2400 MHz or 2133 MHz where required. Systems that require ECC memory, registered modules, higher capacities per slot, or a different pin count cannot use this part.

260-pin DDR4 SODIMM form factor

The 260-pin SO-DIMM layout is the sole physical interface that determines whether the module seats correctly. Verify the target device uses 260-pin DDR4 slots before ordering.

How it compares

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

Price $25.99
Cheaper than about 79% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $6.50 per GB
Pricier than about 56% of the 1,886 comparable items (median $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 number2S6D41R804 GB
Total capacity4 GB
Product type260-Pin DDR4 Non-ECC SODIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Recommended forLaptops, All-in-One Systems, and NAS Systems

Questions about this item

What motherboard slot is required for this 260-pin SODIMM?

The module fits a standard DDR4 260-pin SO-DIMM socket found in laptops, mini desktops, micro servers and NAS systems.

Will this CL19 2666 MHz stick run with my existing 2400 MHz or 2133 MHz memory?

Yes, it is backward compatible and will downclock to match the slower modules while keeping CL19 timings.

How can I confirm the module is recognised at 2666 MHz after installation?

Check the system BIOS or a tool such as CPU-Z; the memory tab should show 2666 MHz (PC4-21300) and CL19 latency.

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