Crucial
Crucial DDR4 SODIMM 2666 Spec and Price in the United Kingdom
DDR41x16GBSODIMM14.25 ns true latency
Crucial's DDR4 laptop modules span the 2133-2666 MT/s JEDEC grades at CL15-19 and 1.2V, per the documented listings — single modules and kits from 16GB to 32GB. The compatibility-first DDR4 SODIMM option for laptop and mini-PC upgrades.
25th of 25 models in the Laptop RAM catalog on Speed.
Current best price
Prices include VAT.
Captured periodically and may have changed.- 1x16GB
- 1x16GB 2400 CL17
- 1x16GB 2133 CL15
- 1x32GB
- 2x16GB
- 2x16GB 2400 CL17
- 2x16GB 2133 CL15
- 4x8GB 2133 CL15
- 2x8GB
- 4x4GB 2133 CL15
March 19, 20261205 capturestoday · £109.81
Each point is one capture, not a list price. How we track prices
Specifications
- Capacity
- 1x16GB
- Memory type
- DDR4
- Speed
- 2666 MT/s
- CAS latency
- Form factor
- SODIMM
- Voltage
- 1.2 V
- Modules
- 1
- RGB
- No
Capacities
| Configuration | Part number | Speed | CAS latency | Current best price |
|---|---|---|---|---|
| 1x16GB | CT16G4SFRA266 | 2666 MT/s | 19 | £103.93 at Amazon.co.uk · captured 2026-09-15 |
| 1x16GB 2400 CL17 | CT16G4SFD824A | 2400 MT/s | 17 | £103.24 at Amazon.co.uk · captured 2026-09-04 |
| 1x16GB 2133 CL15 | CT16G4SFD8213 | 2133 MT/s | 15 | — |
| 1x32GB | CT32G4SFD8266 | — | — | £198.60 at Amazon.co.uk · captured 2026-09-15 |
| 2x16GB | CT2K16G4SFD8266 | — | — | £224.65 at Amazon.co.uk · captured 2026-09-15 |
| 2x16GB 2400 CL17 | CT2K16G4SFD824A | 2400 MT/s | 17 | £218.67 at Amazon.co.uk · captured 2026-09-15 |
| 2x16GB 2133 CL15 | CT2K16G4SFD8213 | 2133 MT/s | 15 | £198.60 at Amazon.co.uk · captured 2026-09-15 |
| 4x8GB 2133 CL15 | CT4K8G4DFS8213 | 2133 MT/s | 15 | £198.60 at Amazon.co.uk · captured 2026-09-15 |
| 2x8GB | CT2K8G4DFS8266 | 2666 MT/s | 19 | — |
| 4x4GB 2133 CL15 | CT4K4G4DFS8213 | 2133 MT/s | 15 | — |
Guides for this category
How much RAM you actually needHow to size memory from the pressure your machine is under now, why running short quietly costs speed, and when a matched pair beats one stick.RAM speed and latency, and when they matterWhat a kit's MT/s and CAS latency each measure, why true latency is the two together, and the machines where the numbers actually change anything.SO-DIMM vs DIMM: the memory a laptop takesWhy laptop memory is a different module from desktop memory, how DDR4 and DDR5 are keyed apart, and why some machines take no module at all.What is ECC memory, and when you need itWhat error-correcting memory actually catches, how registered and load-reduced modules differ from unbuffered ones, and why the platform decides.
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.