Seagate BarraCuda 2.5-inch HDD 1TB vs Western Digital WD Blue 3.5-inch HDD 1TB
Neither Seagate BarraCuda 2.5-inch HDD 1TB nor Western Digital WD Blue 3.5-inch HDD 1TB wins outright — each takes something the other gives up, so the pick is which of those you want.
| Specification | SeagateBarraCuda 2.5-inch HDD 1TB | Western DigitalWD Blue 3.5-inch HDD 1TB |
|---|---|---|
| Capacity (GB) | 1000 | 1000 |
| Current best price | £56.00betterat Amazon.co.uk · captured 2026-09-04 | £120.00at Amazon.co.uk · captured 2026-09-13 |
| Price per TB | £56.00better | £120.00 |
| RPM | 5400 | 7200better |
| Cache (MB) | 128better | 64 |
| Form factor | 2.5-inch | 3.5-inch |
| Warranty (years) | 2 | 2 |
How these two compare
Sequential throughput
Seagate BarraCuda 2.5-inch HDD 1TB is rated 140 MB/s read and 140 MB/s write; Western Digital WD Blue 3.5-inch HDD 1TB, 150 MB/s read and 150 MB/s write. On a mechanical drive read and write track closely — platter speed and data density set the rate, not the direction — so it is the read figure that separates them, and Western Digital WD Blue 3.5-inch HDD 1TB carries the higher one.
Price
Seagate BarraCuda 2.5-inch HDD 1TB is £56.00 (£56.00 per TB); Western Digital WD Blue 3.5-inch HDD 1TB is £120.00 (£120.00 per TB).
Spindle speed
Seagate BarraCuda 2.5-inch HDD 1TB turns at 5400 RPM, Western Digital WD Blue 3.5-inch HDD 1TB at 7200 RPM. Higher RPM shortens the wait for data under the head; lower RPM tends to mean less power draw and a quieter drive.
Cache
Seagate BarraCuda 2.5-inch HDD 1TB ships with 128 MB of cache built in, Western Digital WD Blue 3.5-inch HDD 1TB with 64 MB. The buffer lets the drive take in a burst of writes before the platter catches up and keeps recently read data close — useful under mixed, stop-start load, less so for a single large copy.
Form factor
Seagate BarraCuda 2.5-inch HDD 1TB is 2.5-inch and Western Digital WD Blue 3.5-inch HDD 1TB is 3.5-inch. A 3.5" drive fits a desktop bay; a 2.5" drive fits a laptop or a compact enclosure — the two are not a physical swap for each other.
Warranty
Seagate BarraCuda 2.5-inch HDD 1TB is warranted for 2 years, Western Digital WD Blue 3.5-inch HDD 1TB for 2. The cover is the maker's own commitment; a longer one usually signals a drive built for heavier duty, though it is the mechanism, not the paperwork, that has to last.
Which to buy
It comes down to which you value more: Seagate BarraCuda 2.5-inch HDD 1TB and Western Digital WD Blue 3.5-inch HDD 1TB each lead the other somewhere the site tracks. Read the sections above for which edge — capacity, spindle speed, cache — fits your use.
Common questions about this pair
- Which is faster, Seagate BarraCuda 2.5-inch HDD 1TB or Western Digital WD Blue 3.5-inch HDD 1TB?
- Seagate BarraCuda 2.5-inch HDD 1TB is rated 140 MB/s read and 140 MB/s write; Western Digital WD Blue 3.5-inch HDD 1TB, 150 MB/s read and 150 MB/s write. On a mechanical drive read and write track closely — platter speed and data density set the rate, not the direction — so it is the read figure that separates them, and Western Digital WD Blue 3.5-inch HDD 1TB carries the higher one.
- Which costs less per terabyte, Seagate BarraCuda 2.5-inch HDD 1TB or Western Digital WD Blue 3.5-inch HDD 1TB?
- Seagate BarraCuda 2.5-inch HDD 1TB is £56.00 (£56.00 per TB); Western Digital WD Blue 3.5-inch HDD 1TB is £120.00 (£120.00 per TB).
- Should you buy Seagate BarraCuda 2.5-inch HDD 1TB or Western Digital WD Blue 3.5-inch HDD 1TB?
- It comes down to which you value more: Seagate BarraCuda 2.5-inch HDD 1TB and Western Digital WD Blue 3.5-inch HDD 1TB each lead the other somewhere the site tracks. Read the sections above for which edge — capacity, spindle speed, cache — fits your use.