HDD · SATA · 20TB
Seagate Exos X20 vs WD Purple Pro 20TB
The price verdict
A price verdict needs a current offer for both drives.
Price comparison, including shipping; not an overall reliability rating.
Compared drive
Seagate Exos X20 20TB →ST20000NM007D
$407.29
$20.36 / TB
Usedprices last checked 2026-10-13 22:07 UTC
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the short version
- ▸On paper these two are near-identical — the decision comes down to today's price per terabyte and which listing condition you're comfortable with.
spec by spec
✓ marks the better value for each comparable specification.
| Spec | Seagate Exos X20 | WD Purple Pro |
|---|---|---|
| Cost per TB (today) | $20.36/TB | — |
| Best total price | $407.29 | — |
| Workload rating | 550 TB/yr | 550 TB/yr |
| Warranty | 5 years | 5 years |
| MTBF | 2.5M hours | 2.5M hours |
| Cache | 256 MB | ✓512 MB |
| Spindle speed | 7,200 RPM | 7,200 RPM |
| Recording | CMR | CMR |
| Form factor | 3.5" | 3.5" |
Specs are manufacturer figures for each family; prices are the cheapest in-stock listing found on the last ingest, including shipping. Used and refurbished listings may differ in firmware, sector size and remaining warranty — verify with the seller.
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