Drive comparison
WD1003FZEX vs WD10EARZ
Western Digital WD_BLACK 1TB and Western Digital WD Blue 1TB, compared using published manufacturer specifications.
Western Digital
WD_BLACK 1TB
WD1003FZEX
SATA 6Gb/s · 3.5-inch
$100.00
Amazon US · New listing ↗ASIN B00GWG03XK · as of Sep 12, 2026 04:47 UTC
Full specifications & all listings →
Western Digital
WD Blue 1TB
WD10EARZ
SATA 6Gb/s · 3.5-inch
$316.25
Amazon US · New listing ↗ASIN B0CMLPSL14 · as of Sep 12, 2026 04:47 UTC
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?
- RPM: WD1003FZEX lists 7200; WD10EARZ lists 5400.
- Manufacturer limited warranty: WD1003FZEX lists 5 years (eligible new drives); WD10EARZ lists 2 years (eligible new drives).
- Sustained transfer (up to MB/s): WD1003FZEX lists 150; WD10EARZ lists 180.
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 | WD1003FZEX | WD10EARZ |
|---|---|---|
| Manufacturer | Western Digital | Western Digital |
| Product family | WD_BLACK | WD Blue |
| Model number | WD1003FZEX | WD10EARZ |
| Capacity (TB) | 1 | 1 |
| RPM | 7200 | 5400 |
| Interface | SATA 6Gb/s | SATA 6Gb/s |
| Recording | CMR | CMR |
| Cache (MB) | 64 | 64 |
| Form factor | 3.5-inch | 3.5-inch |
| Manufacturer limited warranty | 5 years (eligible new drives) | 2 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 150 | 180 |
| 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
WD1003FZEX
Western Digital WD_BLACK manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.
WD10EARZ
Western Digital WD Blue manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.