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Four green SO-DIMM sticks with black chips and gold contacts

OWC

OWC 64GB (4x16GB) DDR4 2133MHz CL15 ECC SO-DIMM 1.2V 260-pin laptop RAM

SKU CH-1KSM-KPVB7

64 GB DDR4 ECC kit of four 16 GB modules at 2133 MHz CL15, 1.2 V, 260-pin SO-DIMM for laptops, NAS and micro servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 64GB (4 x 16GB)

  • 64 GB total capacity across four 16 GB modules
  • ECC protection detects and corrects single-bit memory errors
  • JEDEC-compliant DDR4 2133 MHz CL15 at 1.2 V
  • 260-pin SO-DIMM form factor fits laptops and NAS units
  • Unbuffered dual-channel kit for straightforward DIY installation

OWC 64GB DDR4 ECC SO-DIMM Kit

This kit provides 64GB of DDR4 ECC memory across four 16GB modules. It runs at 2133MHz with CL15 latency and 1.2V operation. The 260-pin SO-DIMM form factor fits laptops, all-in-one systems and compatible NAS devices.

Suited for ECC-capable platforms needing maximum

Builders whose systems lack ECC support in the memory controller will not benefit from the error-correction feature. Users limited to two SO-DIMM slots cannot install all four modules. Systems requiring registered or buffered memory must choose a different kit.

The deciding spec is ECC on unbuffered DDR4

Error-correcting code protects data integrity in ZFS arrays, virtualization hosts and micro servers. The modules are unbuffered, so they work only in platforms that accept unbuffered ECC SO-DIMMs. Verify your board or chassis documentation for this exact combination before purchase.

How it compares

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

Price $523.99
Pricier than about 91% 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 $8.19 per GB
Pricier than about 71% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameOWC
Part number2C1D42R8064S
Total capacity64 GB (4 × 16 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
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 do I install the 260-pin DDR4 SO-DIMM modules, and what step is often missed?

Power off the laptop, open the memory compartment, insert each module at an angle until the gold contacts disappear, then press down firmly until both side clips click — the click is the step many forget.

Will the ECC SO-DIMMs need any maintenance or replacement down the line?

No routine maintenance is required; the modules are solid-state and rated for the system lifetime, so replacement is only needed if a fault develops or capacity must increase.

What limit appears first when the 2133 MHz CL15 kit runs sustained workloads in a NAS?

The 2133 MHz bandwidth ceiling is reached before latency or voltage become bottlenecks, capping sustained throughput in multi-threaded NAS tasks.

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