OWC
OWC 128GB (8x16GB) DDR4 3200MHz CL22 ECC Unbuffered SODIMM 1.2V 260-pin
A 128GB kit of eight 16GB DDR4 3200MHz ECC SODIMM modules at CL22 and 1.2V for compatible laptops, all-in-one PCs and NAS systems
- Capacity128GB (8 x 16GB)
- Type260-Pin DDR4 SO-DIMM
- SpeedDDR4 3200 (PC4 25600)
- CAS LatencyCL22
- Voltage1.2V
- ECCECC
- 128 GB total capacity from eight 16 GB modules
- ECC protection detects and corrects single-bit memory errors
- 3200 MHz DDR4 speed with CL22 latency for responsive multitasking
- Low 1.2 V operation reduces power draw and heat
- Backward compatible with 2933, 2666, 2400 and 2133 MHz systems
OWC 128GB DDR4 3200MHz ECC SODIMM Kit
This kit provides 128GB of DDR4 memory through eight 16GB modules running at 3200MHz with CL22 latency. It targets laptops, all-in-one PCs and NAS devices that require error-correcting code for data integrity. The unbuffered 260-pin SO-DIMM format fits standard DDR4 slots in compatible mobile and compact systems. Builders needing non-ECC memory or higher frequencies should look elsewhere.
JEDEC 1.2V Operation and Thermal Profile
Each module operates at the standard 1.2V JEDEC voltage, keeping power draw low for battery-powered or fanless designs. With no heat spreaders installed, the modules rely on system airflow and run silently in normal workloads. Backward compatibility with 2933MHz, 2666MHz, 2400MHz and 2133MHz allows the kit to downclock automatically when the platform demands it.
Eight-Module Layout for Dense Configurations
The 8x16GB arrangement fills all available slots on platforms that support eight SO-DIMM sockets, maximising capacity without leaving empty banks. Dual-channel architecture is maintained when populated in matched pairs across channels. Systems with fewer than eight slots cannot use the full kit, and modules cannot be mixed with registered or load-reduced DIMMs.
Highlights
- 128 GB total capacity from eight 16 GB modules
- ECC protection detects and corrects single-bit memory errors
- 3200 MHz DDR4 speed with CL22 latency for responsive multitasking
- Low 1.2 V operation reduces power draw and heat
- Backward compatible with 2933, 2666, 2400 and 2133 MHz systems
Specifications
| Brand | OWC |
|---|---|
| Part Number | 3C2D41R8128K |
| Capacity | 128GB (8 x 16GB) |
| Type | 260-Pin DDR4 SO-DIMM |
| Speed | DDR4 3200 (PC4 25600) |
| CAS Latency | CL22 |
| Voltage | 1.2V |
| ECC | ECC |
| Buffered/Registered | Unbuffered |
| Multi-channel Kit | Dual Channel Kit |
| Heat Spreader | No |
| Recommend Use | Laptops, All-in-One Systems, and NAS Systems |
Questions about this item
How do I install the 8 SODIMM modules and what step is commonly missed?
Power off the laptop or NAS, remove the battery if accessible, open the memory compartment, align each 260-pin module's notch with the slot key, press firmly until the side clips click, then reinstall the battery and power on to verify all 128GB are detected in BIOS.
What maintenance or replacement will the 8x16GB ECC kit need over time?
No periodic maintenance is required; if a module fails, the system will log corrected ECC errors or fail to boot, at which point the faulty 16GB stick can be identified and swapped individually.
What limit appears first when the 3200MHz CL22 kit runs sustained workloads in a laptop or NAS?
The 1.2V JEDEC voltage and CL22 latency are fixed; under continuous load the memory controller's thermal throttling or the platform's maximum supported speed — often 2933MHz, 2666MHz, 2400MHz or 2133MHz — will cap effective throughput before the modules themselves reach any limit.
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