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Four green DDR4 SODIMM modules with gold contacts

OWC

OWC 64GB (4x16GB) DDR4 2933MHz CL21 ECC Unbuffered SODIMM laptop RAM

SKU CH-9S8Z-PPTP3

64 GB laptop memory kit with four 16 GB DDR4 2933 MHz CL21 ECC unbuffered SODIMMs running at 1.2 V

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • CAS latencyCL21
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 64GB (4 x 16GB)

  • 64 GB total capacity across four 16 GB modules
  • DDR4 2933 MHz speed rated at PC4-23400
  • ECC error correction protects data integrity in NAS and micro servers
  • Low 1.2 V voltage reduces power draw and heat
  • Backward compatible with 2666, 2400 and 2133 MHz systems

64GB DDR4 2933MHz ECC SODIMM kit

This 64GB kit contains four 16GB DDR4 2933MHz CL21 ECC unbuffered SODIMM modules designed for laptops, all-in-one systems and NAS devices. It operates at 1.2V and fits 260-pin slots, providing error-correcting memory for workloads that require data integrity.

Capacity and headroom at 2933MHz

The 64GB total capacity handles large datasets, virtual machines and heavy multitasking in compatible micro servers and NAS units. Systems limited to 2666MHz, 2400MHz or 2133MHz will run the modules at the lower speed, so peak bandwidth is constrained by the platform rather than the memory itself.

JEDEC compliance and lifetime support

Full JEDEC and RoHS compliance ensures a warranty-safe upgrade without violating system warranties. OWC backs the kit with a limited lifetime warranty and a consumer-friendly advanced replacement programme that includes free technical support for installation assistance.

How it compares

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

Price $492.99
Pricier than about 90% of the 2,079 comparable items (median $70.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 91% of the 1,886 comparable items (median 16 GB).
Price per GB $7.70 per GB
Pricier than about 67% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameOWC
Part number2C9D41R8064S
Total capacity64 GB (4 × 16 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
CAS latencyCL21
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

Will the 2933MHz CL21 modules down-clock to 2666MHz or 2400MHz in my older laptop?

The kit is backwards compatible with 2666MHz, 2400MHz and 2133MHz systems, so it will run at the highest speed your platform supports.

How can I confirm the ECC function is active after installing the four 16GB sticks?

Check the BIOS or UEFI memory information screen — it should report ECC enabled and show the full 64GB at the configured speed.

Does the 260-pin SODIMM package include any heat spreaders or installation tools?

The modules ship without heat spreaders and no tools are included; only the four 16GB DDR4 SODIMMs are in the box.

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