Seagate SkyHawk HDD 4TB vs Western Digital WD Blue 3.5-inch HDD 4TB
Western Digital WD Blue 3.5-inch HDD 4TB is at least the equal of the other on every measure that decides this, and ahead on at least one.
| Specification | SeagateSkyHawk HDD 4TB | Western DigitalWD Blue 3.5-inch HDD 4TB |
|---|---|---|
| Capacity (GB) | 4000 | 4000 |
| Current best price | $159.99at Amazon.com · captured 2026-09-13 | $159.79betterat Amazon.com · captured 2026-09-04 |
| Price per TB | $40.00 | $39.95better |
| Cache (MB) | 256 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Warranty (years) | 3better | 2 |
How these two compare
Sequential throughput
Both quote 180 MB/s read — Seagate SkyHawk HDD 4TB at 180 MB/s write, Western Digital WD Blue 3.5-inch HDD 4TB at 180 MB/s — so throughput does not separate them on the number vendors print. Sequential rate on a spinning disk comes down to platter speed and density, and reading and writing land close together.
Price
Seagate SkyHawk HDD 4TB is $159.99 ($40.00 per TB); Western Digital WD Blue 3.5-inch HDD 4TB is $159.79 ($39.95 per TB).
Cache
Seagate SkyHawk HDD 4TB ships with 256 MB of cache built in, Western Digital WD Blue 3.5-inch HDD 4TB with 256 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.
Warranty
Seagate SkyHawk HDD 4TB is warranted for 3 years, Western Digital WD Blue 3.5-inch HDD 4TB 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
Against the other, Western Digital WD Blue 3.5-inch HDD 4TB is even or ahead on every tracked measure and behind on none, the one case where the choice needs no compromise.
Common questions about this pair
- Which is faster, Seagate SkyHawk HDD 4TB or Western Digital WD Blue 3.5-inch HDD 4TB?
- Both quote 180 MB/s read — Seagate SkyHawk HDD 4TB at 180 MB/s write, Western Digital WD Blue 3.5-inch HDD 4TB at 180 MB/s — so throughput does not separate them on the number vendors print. Sequential rate on a spinning disk comes down to platter speed and density, and reading and writing land close together.
- Which costs less per terabyte, Seagate SkyHawk HDD 4TB or Western Digital WD Blue 3.5-inch HDD 4TB?
- Seagate SkyHawk HDD 4TB is $159.99 ($40.00 per TB); Western Digital WD Blue 3.5-inch HDD 4TB is $159.79 ($39.95 per TB).
- Should you buy Seagate SkyHawk HDD 4TB or Western Digital WD Blue 3.5-inch HDD 4TB?
- Against the other, Western Digital WD Blue 3.5-inch HDD 4TB is even or ahead on every tracked measure and behind on none, the one case where the choice needs no compromise.