Crucial RAM CT4G4DFS6266 4GB DDR4 2666 MHz CL19 Desktop Memory
£39.99 £10.00/GB
4% cheaper per GB than the average 4GB DDR4 kit we track.
▼ 78% below 90-day median Desktop DDR4 Non-ECC Unbuffered
Buy on Amazon.co.uk
Specification
| Capacity | 4GB |
| Generation | DDR4 |
| Speed | 2666MHz |
| Form factor | DIMM |
| ECC | Non-ECC |
| Buffered | Unbuffered |
| For | Desktop |
| Brand | Crucial |
| ASIN | B07K8ZHX6D |
Price history
Typical price (median) 90-day £183.11 12-month £243.76 12-month low £162.51 All-time low £13.99 (2023-03-31)
12-month low Today’s price is 84% below this kit’s typical price for the past year, and it has been cheaper than this for 7% of that year (last on 22 Mar 2026). Why medians, not averages ›
Cheaper per GB in the same spec
Same generation, capacity and form factor as this kit, ranked by £/GB. See all ›
| £/GB | Price | Capacity | Manufacturer | For | Type | Form Factor | ECC / Buffered | Description | |
|---|---|---|---|---|---|---|---|---|---|
 | £7.50best £/GB | £30.00 | 4GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2133MHz | - | |
 | £7.50 | £30.00 | 4GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2400MHz | - | |
 | £7.50 | £30.00 | 4GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 2666MHz | - | |
 | £7.50 | £30.00 | 4GB | GLOBAL MEMORY | Desktop | DDR4 | DIMM 3200MHz | - | |
 | £8.02 | £32.07 | 4GB | ADATA | Desktop | DDR4 | DIMM | Unbuffered | |
 | £8.74 | £34.95 | 4GB | Crucial | Desktop | DDR4 | DIMM 3200MHz | - |
About this kit
- Improve your system's responsiveness, run apps faster and multitask with ease
- Install with ease; no computer skills required. How-to guides available at Crucial
- Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool
- Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise
- ECC Type = Non-ECC, Form Factor = UDIMM, Pin Count = 288-pin, PC Speed = PC4-21300, Voltage = 1.2V, Rank and Configuration = 1Rx16
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