OWC 16GB DDR5 4800 CL40 ECC Unbuffered SODIMM laptop RAM
A 16 GB DDR5 SODIMM with ECC running at 4800 MT/s CL40 for laptops, NAS and all-in-one systems
- Total capacity16 GB
- Rated speedDDR5 4800 (PC5 38400)
- CAS latencyCL40
- Buffer typeUnbuffered
- Product type262-Pin DDR5 SO-DIMM
- ECC protection keeps data intact on critical workloads
- 4800 MHz DDR5 speed lifts multitasking responsiveness
- JEDEC-standard 1.1 V operation cuts power draw
- 262-pin SO-DIMM fits laptops, NAS and all-in-one systems
- 16 GB single module upgrades capacity in one step
Single-module 16 GB DDR5 upgrade
This 16 GB DDR5 4800 CL40 module brings ECC error correction and 1.1 V operation to a standard 262-pin SO-DIMM slot. It is built for laptops, all-in-one PCs, NAS units and select servers that require unbuffered ECC memory. The JEDEC-compliant design ensures a warranty-safe upgrade path for supported platforms.
Suited for ECC-capable DDR5 systems only
This module fits systems that explicitly support DDR5 4800 unbuffered ECC SO-DIMMs. It is not for machines that accept only non-ECC memory, nor for platforms limited to earlier DDR generations or different form factors. Buyers who need higher capacity per slot or registered DIMMs should look elsewhere.
ECC unbuffered DDR5 4800 CL40 at 1.1 V
The decisive specification is the combination of ECC unbuffered operation, DDR5 4800 speed, CL40 latency and 1.1 V voltage in a 262-pin package. If the target system requires registered ECC, non-ECC, a different speed grade or a different pin count, this module will not function.
How it compares
Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.
- Price $448.99
- Pricier than about 90% of the 2,079 comparable items (median $70.99).
- Total capacity 16 GB
- Typical for this category: the median of 1,886 items is 16 GB.
- Price per GB $28.06 per GB
- Pricier than about 90% 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 | |
|---|---|
| Part number | 4C8D51R816 GB |
| Total capacity | 16 GB |
| Product type | 262-Pin DDR5 SO-DIMM |
| Performance | |
| Rated speed | DDR5 4800 (PC5 38400) |
| Memory | |
| CAS latency | CL40 |
| ECC support | Yes |
| Buffer type | Unbuffered |
| Heat spreader | No |
Other versions of this model
5 more in the same range
OWC 16GB DDR5 5200 CL42 1Rx8 262-pin 1.1V ECC SODIMM laptop RAM
- 16 GB
- DDR5 5200
OWC 32GB (2x16GB) DDR5 5200 CL42 262-pin 1.1V laptop RAM
- 32 GB (2 × 16 GB)
- DDR5 5200
OWC 32GB (2x16GB) DDR5 5600 CL46 1.1V UDIMM desktop RAM
- 32 GB (2 × 16 GB)
- DDR5 5600
OWC 32GB DDR5 5600 CL46 2Rx8 262-pin 1.1V SODIMM laptop RAM
- 32 GB
- DDR5 5600
Questions about this item
How much power does this 1.1 V DDR5 module draw during continuous operation?
It operates at the JEDEC-standard 1.1 V, so power draw is determined by the laptop or NAS platform rather than the module itself.
Does my system need to support ECC unbuffered DDR5 SO-DIMMs for this stick to function?
Yes — the module is a 262-pin ECC unbuffered DDR5 SO-DIMM, so the platform must accept that exact type.
Will this CL40 4800 MT/s module run at its rated speed alongside slower DDR5 memory?
The memory controller will set all installed modules to the lowest common speed and latency.
More in Laptop RAM
Similar items
Crucial CT2K16G4SFRA266 32GB (2 x 16GB) DDR4 2666 laptop RAM
- 32 GB (2 × 16 GB)
- DDR4 2666
Kingston Technology Corp. KF556S40IBK2-32 32GB (2x16GB) DDR5 5600 CL40 laptop RAM
- 32 GB (2 × 16 GB)
- DDR5 5600
Black Diamond Memory BD32GX22133MQN28 64GB (2×32GB) DDR4 2133 SO-DIMM laptop RAM
- 64 GB (2 × 32 GB)
- DDR4 2133
Corsair Vengeance CMSX32GX4M1A3200C22 32GB DDR4 3200 laptop RAM
- 32 GB
- DDR4 3200
Timetec 64GB Kit (2x32GB) DDR5 4800MHz CL40 262-Pin SODIMM Laptop RAM
- 262-Pin DDR5 SO-DIMM










