Drive comparison
ST16000NM007H vs ST16000NM007J
Seagate Exos X24 16TB and Seagate Exos X18 16TB, compared using published manufacturer specifications.
Seagate
Exos X24 16TB
ST16000NM007H
SAS 12 Gb/s · 3.5-inch
$729.99
Amazon US · New listing ↗ASIN B0CRF9M3V5 · as of Sep 12, 2026 04:49 UTC
Full specifications & all listings →Seagate
Exos X18 16TB
ST16000NM007J
SAS 12 Gb/s · 3.5-inch
No verified exact-model Amazon listing yet.
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What differs between these models?
- Cache (MB): ST16000NM007H lists 512; ST16000NM007J lists 256.
- Average idle power (W): ST16000NM007H lists 6.5; ST16000NM007J lists 5.5.
- Sustained transfer (up to MB/s): ST16000NM007H lists 285; ST16000NM007J lists 270.
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 | ST16000NM007H | ST16000NM007J |
|---|---|---|
| Manufacturer | Seagate | Seagate |
| Product family | Exos X24 | Exos X18 |
| Model number | ST16000NM007H | ST16000NM007J |
| Capacity (TB) | 16 | 16 |
| RPM | 7200 | 7200 |
| Interface | SAS 12 Gb/s | SAS 12 Gb/s |
| Cache (MB) | 512 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 6.5 | 5.5 |
| Power-on hours per year | 8760 | 8760 |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 285 | 270 |
Compatibility and buying checks
- A SAS drive requires a compatible SAS controller or backplane. A normal motherboard SATA port cannot operate a SAS drive.
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST16000NM007H
Seagate Exos X24 manufacturer specifications ↗ · pages 3
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
ST16000NM007J
Seagate Exos X18 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.