Drive comparison
ST14000NM003G vs HDWG81EXZSTB
Seagate Exos X16 14TB and Toshiba N300 Pro 14TB, compared using published manufacturer specifications.
Seagate
Exos X16 14TB
ST14000NM003G
SATA 6 Gb/s · 3.5-inch
$524.45
Amazon US · New listing ↗ASIN B07SPY6NMP · as of Sep 12, 2026 04:49 UTC
Full specifications & all listings →Toshiba
N300 Pro 14TB
HDWG81EXZSTB
SATA 6 Gb/s · 3.5-inch
No verified exact-model Amazon listing yet.
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?
- Cache (MB): ST14000NM003G lists 256; HDWG81EXZSTB lists 1024.
- Sustained transfer (up to MB/s): ST14000NM003G lists 249; HDWG81EXZSTB lists 294.
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 | ST14000NM003G | HDWG81EXZSTB |
|---|---|---|
| Manufacturer | Seagate | Toshiba |
| Product family | Exos X16 | N300 Pro |
| Model number | ST14000NM003G | HDWG81EXZSTB |
| Capacity (TB) | 14 | 14 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6 Gb/s |
| Cache (MB) | 256 | 1024 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 5 | Not recorded |
| Power-on hours per year | 8760 | Not recorded |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 249 | 294 |
| NAS bays | Not recorded | 24 |
| Recording | Not recorded | CMR |
| Sector format | Not recorded | 512e |
| Idle power (W) | Not recorded | 3.66 |
| Package / region | Not recorded | US retail; manufacturer-documented bulk package alias |
| Workload rating (TB/year) | Not recorded | 550 |
| Average operating power (W) | Not recorded | 6.94 |
| Rotational vibration sensors | Not recorded | Yes |
Compatibility and buying checks
- Check sector-format support in the controller and operating system, particularly for native 4K (4Kn) variants.
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST14000NM003G
Seagate Exos X16 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
HDWG81EXZSTB
Toshiba N300 Pro US datasheet TAEC-2839-R2.0, July 2026 ↗ · pages 4, 7
Reviewed 2026-09-08. Published specifications; no independent benchmark or failure-rate claim.