
Crucial X9 4TB Portable External SSD - Up to 1050MB/s, External Solid State Drive, Works with PlayStation, Xbox, PC and Mac, USB-C 3.2 - CT4000X9SSD902 has risen 23.3% over the last 30 days, currently at £369.99.
Price last checked: 18 Apr 2026, 16:50
The Crucial X9 4TB Portable External SSD is a high-capacity, portable storage solution with a USB-C 3.2 interface, offering read speeds of up to 1050MB/s. With a 4TB capacity, it can store a large number of files, including photos, videos, and documents, making it suitable for users who need to transfer and store large amounts of data on the go. This external solid state drive is ideal for gamers, content creators, and professionals who require a reliable and fast storage solution for their P...
Crucial X9 4TB Portable External SSD - Up to 1050MB/s, External Solid State Drive, Works with PlayStation, Xbox, PC and Mac, USB-C 3.2 - CT4000X9SSD902 has increased 23.3% over the last 30 days to £369.99. The 30-day average is £321.66. If you need this product soon, buying before further increases may be worthwhile.

£82.50/TB
Updated 49m ago

£110.00/TB
Updated 50m ago

£78.33/TB
Updated 38m ago

£87.50/TB
Updated 40m ago
Explains how to compare SSD endurance (TBW/DWPD), warranty terms, controller/DRAM design, and real-world performance metrics like sustained writes after SLC cache, 4K QD1 latency, and thermals.
NVMe vs SATA, TLC vs QLC, DRAM cache — cut through the jargon and pick the best SSD for your PC build or upgrade.