Drive comparison
ST8000DM002 vs WD8002FZWX
Seagate Desktop HDD 8TB and Western Digital WD_BLACK 8TB, compared using published manufacturer specifications.
Seagate
Desktop HDD 8TB
ST8000DM002
SATA 6 Gb/s · 3.5-inch
$377.48
Amazon US · New listing ↗ASIN B019OSCLH8 · as of Sep 12, 2026 10:56 UTC
Full specifications & all listings →Western Digital
WD_BLACK 8TB
WD8002FZWX
SATA 6Gb/s · 3.5-inch
No verified exact-model Amazon listing yet.
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What differs between these models?
- Interface: ST8000DM002 lists SATA 6 Gb/s; WD8002FZWX lists SATA 6Gb/s.
- Cache (MB): ST8000DM002 lists 256; WD8002FZWX lists 128.
- Manufacturer limited warranty: ST8000DM002 lists 2 years (eligible new drives); WD8002FZWX lists 5 years (eligible new drives).
- Sustained transfer (up to MB/s): ST8000DM002 lists 220; WD8002FZWX lists 238.
A larger cache, higher RPM or higher advertised sequential speed alone does not establish which drive is better for your workload.
Specifications side by side
| Specification | ST8000DM002 | WD8002FZWX |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | Desktop HDD | WD_BLACK |
| Model number | ST8000DM002 | WD8002FZWX |
| Capacity (TB) | 8 | 8 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Cache (MB) | 256 | 128 |
| Form factor | 3.5-inch | 3.5-inch |
| Load/unload cycles | 300000 | Not recorded |
| Average idle power (W) | 7.2 | Not recorded |
| Power-on hours per year | 2400 | Not recorded |
| Workload rating (TB/year) | 55 | Not recorded |
| Average operating power (W) | 9 | Not recorded |
| Manufacturer limited warranty | 2 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 220 | 238 |
| RPM | Not recorded | 7200 |
| Recording | Not recorded | CMR |
Compatibility and buying checks
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST8000DM002
Seagate Desktop HDD manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD8002FZWX
Western Digital WD_BLACK manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.