HDD · SAS · 12TB
HGST Ultrastar He12 vs Seagate Exos X18 12TB
The price verdict
Seagate Exos X18 12TB has the lower cost per TB.
Price comparison, including shipping; not an overall reliability rating.
Compared drive
HGST Ultrastar He12 12TB →$335.00
$27.92 / TB
Refurbprices last checked 2026-10-13 18:07 UTC
Buy on eBay →↓ Lower cost / TB
Seagate Exos X18 12TB →$329.00
$27.42 / TB
Usedprices last checked 2026-10-13 18:07 UTC
Buy on eBay →Some “Buy” links earn us a commission. Who pays us.
the short version
- ▸On today's best listings the Seagate Exos X18 12TB is 2% cheaper per terabyte ($27.42/TB vs $27.92/TB). Prices move — check the live table below.
- ▸Warranty runs 5 years on the Seagate Exos X18 12TB versus seller warranty only on the HGST Ultrastar He12 12TB.
spec by spec
✓ marks the better value for each comparable specification.
| Spec | HGST Ultrastar He12 | Seagate Exos X18 |
|---|---|---|
| Cost per TB (today) | $27.92/TB | ✓$27.42/TB |
| Best total price | $335.00 | ✓$329.00 |
| Workload rating | 550 TB/yr | 550 TB/yr |
| Warranty | EOL / seller only | ✓5 years |
| MTBF | 2.5M hours | 2.5M hours |
| Cache | 256 MB | 256 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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