Drive comparison
ST14000NT001 vs WD141KFGX
Seagate IronWolf Pro 14TB and Western Digital WD Red Pro 14TB, compared using published manufacturer specifications.
Seagate
IronWolf Pro 14TB
ST14000NT001
SATA 6 Gb/s · 3.5-inch
$584.45
Amazon US · New listing ↗ASIN B0B94P481H · as of Sep 12, 2026 11:46 UTC
Full specifications & all listings →Western Digital
WD Red Pro 14TB
WD141KFGX
SATA 6Gb/s · 3.5-inch
Check current Amazon price
Amazon US · Verified product · check availability and condition on Amazon ↗ASIN B083VQZP2Q
Full specifications & all listings →As an Amazon Associate I earn from qualifying purchases. Match the selected variant, condition and seller terms before ordering.
What differs between these models?
- Interface: ST14000NT001 lists SATA 6 Gb/s; WD141KFGX lists SATA 6Gb/s.
- Cache (MB): ST14000NT001 lists 256; WD141KFGX lists 512.
- Sustained transfer (up to MB/s): ST14000NT001 lists 270; WD141KFGX lists 255.
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 | ST14000NT001 | WD141KFGX |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | IronWolf Pro | WD Red Pro |
| Model number | ST14000NT001 | WD141KFGX |
| Capacity (TB) | 14 | 14 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Recording | CMR | CMR |
| Cache (MB) | 256 | 512 |
| Form factor | 3.5-inch | 3.5-inch |
| Power-on hours per year | 8760 | Not recorded |
| Workload rating (TB/year) | 550 | 550 |
| Average operating power (W) | 7.6 | Not recorded |
| Rotational vibration sensors | Yes | Not recorded |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 270 | 255 |
| Physical sector size (bytes) | Not recorded | 4096 |
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
ST14000NT001
Seagate IronWolf Pro manufacturer specifications ↗ · pages 3
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD141KFGX
Western Digital WD Red Pro manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.