OWC 16GB DDR4 2133 PC4-17000 CL15 ECC Registered RDIMM 2Rx4 1.2V server RAM
- 16GB
- 288-Pin DDR4 SDRAM
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OWC
A 16 GB DDR5 laptop memory module running at 5200 MHz with CL42 latency and 1.1 V operation
Capacity 16GB
This module delivers 16 GB of DDR5 memory in a 262-pin SO-DIMM form factor. It targets users upgrading select laptops, all-in-one PCs or compatible NAS systems. The single-rank 1Rx8 design operates at the JEDEC-standard 1.1 V without ECC or buffering.
Running at the rated PC5-41600 speed, the module maintains its CL42 latency during extended workloads rather than only in brief bursts. The 1.1 V operating voltage keeps power draw steady under continuous multitasking or large-file handling. JEDEC compliance ensures stable timing without relying on overclocking headroom.
The 262-pin connector and DDR5 signalling define the maximum bandwidth and latency floor for this upgrade. Systems that only support earlier DDR generations cannot accept the module physically or electrically. Capacity is fixed at 16 GB per slot, so total memory depends on the number of sockets the host provides.
| Brand | OWC |
|---|---|
| Part Number | 5S2D51R816GB |
| Capacity | 16GB |
| Type | 262-Pin DDR5 SO-DIMM |
| Speed | DDR5 5200 (PC5 41600) |
| CAS Latency | CL42 |
| Voltage | 1.1V |
| ECC | No |
| Buffered/Registered | Unbuffered |
| Heat Spreader | No |
| Recommend Use | Laptops, All-in-One Systems, and NAS Systems |
Other versions of this model
Same family, different memory, cooler or clock — compare before you commit.
The module runs at the standard DDR5 voltage of 1.1 V and has no heat spreader, so thermal output stays low; typical DDR5 power draw at this speed is modest and well within laptop cooling limits.
A free DDR5 SO-DIMM slot wired for 1.1 V unbuffered non-ECC memory and a BIOS that supports 5200 MT/s CL42 JEDEC timings.
Yes, if the other stick is also DDR5 at 1.1 V; the memory controller will run both at the lowest common speed and latency, giving matched dual-channel capacity.
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