Drive comparison
ST20000NM004E vs WD203KRYZ
Seagate Exos X22 20TB and Western Digital WD Gold 20TB, compared using published manufacturer specifications.
Seagate
Exos X22 20TB
ST20000NM004E
SATA 6 Gb/s · 3.5-inch
$798.00
Amazon US · Used / renewed listing ↗ASIN B0CHKP1716 · as of Sep 12, 2026 10:56 UTC
Full specifications & all listings →Western Digital
WD Gold 20TB
WD203KRYZ
SATA 6Gb/s · 3.5-inch
Check current Amazon price
Amazon US · New listing ↗ASIN B0DF9FK544
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: ST20000NM004E lists SATA 6 Gb/s; WD203KRYZ lists SATA 6Gb/s.
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 | ST20000NM004E | WD203KRYZ |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | Exos X22 | WD Gold |
| Model number | ST20000NM004E | WD203KRYZ |
| Capacity (TB) | 20 | 20 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Cache (MB) | 512 | 512 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 5.4 | 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) | 285 | 285 |
| 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
ST20000NM004E
Seagate Exos X22 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD203KRYZ
Western Digital WD Gold manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.