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
Green circuit board with black memory chips and gold edge connector

OWC

OWC 4GB DDR4 2666 CL19 1.2V 260-pin SODIMM laptop RAM

SKU CH-6ZT4-AH8ND

Adds 4 GB of DDR4 2666 CL19 SODIMM memory for laptops, NAS and small-form-factor systems

  • 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
  • Boosts multitasking with 4 GB DDR4 2666 CL19 module
  • Runs cool and efficiently at 1.2 V low voltage
  • Fits laptops, AIOs and NAS via 260-pin SO-DIMM slot
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Backward compatible with 2400 MHz and 2133 MHz systems

4 GB DDR4 2666 SODIMM for laptops and NAS

This 4 GB DDR4 module runs at 2666 MHz with CL19 latency and 1.2 V operation. It uses the standard 260-pin SO-DIMM form factor and is unbuffered non-ECC memory. The stick is designed as a direct replacement for QNAP part numbers RAM-4GDR4A0-SO-2666, RAM-4GDR4T0-SO-2666 and RAM-4GDR4T1-SO-2666. It suits laptops, all-in-one PCs and compatible NAS units that accept DDR4 SO-DIMMs.

Fits 260-pin DDR4 slots and runs at 1.2 V

The module installs in any 260-pin DDR4 SO-DIMM socket and will down-clock to 2400 MHz or 2133 MHz if the platform requires it. No heat spreader is fitted, so it clears tight spaces in thin laptops and compact NAS appliances. Because it is unbuffered and non-ECC, it works in consumer platforms but not in systems that require registered or ECC memory. The low voltage helps keep power draw minimal in portable devices.

Replaces slower DDR4 or fills an empty slot

Use this module to upgrade from 2133 MHz or 2400 MHz DDR4 where the system supports 2666 MHz operation. It also adds capacity when a free SO-DIMM slot is available. The jump is worthwhile when the platform can run at the higher 2666 MHz data rate and the workload benefits from extra bandwidth. Buyers needing ECC, registered DIMMs or capacities beyond 4 GB per module should look elsewhere.

How it compares

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

Price $28.99
Cheaper than about 75% 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 $7.25 per GB
Pricier than about 63% 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 SO-DIMM
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

How does the CL19 latency at 2666 MHz affect sustained throughput?

At CL19 each access waits nineteen cycles; at 2666 MHz that is the primary timing limit you hit during long workloads.

What heat or noise should I expect from this module running all day?

The stick has no heat spreader and draws 1.2 V, so it runs silently and adds minimal warmth inside a laptop or NAS chassis.

Which slot and voltage must my system provide for this SODIMM to work?

It needs a 260-pin DDR4 SO-DIMM slot operating at 1.2 V; the module is backward compatible with 2400 MHz and 2133 MHz buses.

More in Laptop RAM

Similar items