Drive comparison
ST16000NM000J vs WD161KRYZ
Seagate Exos X18 16TB and Western Digital WD Gold 16TB, compared using published manufacturer specifications.
Seagate
Exos X18 16TB
ST16000NM000J
SATA 6 Gb/s · 3.5-inch
$711.00
Amazon US · New listing ↗ASIN B08JV7N6J1 · as of Sep 12, 2026 11:42 UTC
Full specifications & all listings →Western Digital
WD Gold 16TB
WD161KRYZ
SATA 6Gb/s · 3.5-inch
Check current Amazon price
Amazon US · Verified product · check availability and condition on Amazon ↗ASIN B089S33PR3
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: ST16000NM000J lists SATA 6 Gb/s; WD161KRYZ lists SATA 6Gb/s.
- Cache (MB): ST16000NM000J lists 256; WD161KRYZ lists 512.
- Sustained transfer (up to MB/s): ST16000NM000J lists 270; WD161KRYZ lists 262.
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 | ST16000NM000J | WD161KRYZ |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | Exos X18 | WD Gold |
| Model number | ST16000NM000J | WD161KRYZ |
| Capacity (TB) | 16 | 16 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Cache (MB) | 256 | 512 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 5.1 | 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) | 270 | 262 |
| Recording | Not recorded | CMR |
| Workload rating (TB/year) | Not recorded | 550 |
| Logical sector size (bytes) | Not recorded | 512 |
| 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
ST16000NM000J
Seagate Exos X18 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD161KRYZ
Western Digital WD Gold manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.