HDD · SATA · 4TB
HGST Ultrastar 7K4000 vs Seagate IronWolf 4TB
The price verdict
HGST Ultrastar 7K4000 4TB has the lower cost per TB.
Price comparison, including shipping; not an overall reliability rating.
↓ Lower cost / TB
HGST Ultrastar 7K4000 4TB →$78.99
$19.75 / TB
Usedprices last checked 2026-10-14 02:07 UTC
Buy on eBay →Compared drive
Seagate IronWolf 4TB →$99.99
$25.00 / TB
Usedprices last checked 2026-10-14 02:07 UTC
Buy on eBay →Some “Buy” links earn us a commission. Who pays us.
the short version
- ▸On today's best listings the HGST Ultrastar 7K4000 4TB is 21% cheaper per terabyte ($19.75/TB vs $25.00/TB). Prices move — check the live table below.
- ▸The HGST Ultrastar 7K4000 4TB is rated for 550 TB/yr of workload against 180 TB/yr for the Seagate IronWolf 4TB — the difference between a nearline drive built for constant duty and one meant for lighter NAS cycles.
- ▸Warranty runs 3 years on the Seagate IronWolf 4TB versus seller warranty only on the HGST Ultrastar 7K4000 4TB.
spec by spec
✓ marks the better value for each comparable specification.
| Spec | HGST Ultrastar 7K4000 | Seagate IronWolf |
|---|---|---|
| Cost per TB (today) | ✓$19.75/TB | $25.00/TB |
| Best total price | ✓$78.99 | $99.99 |
| Workload rating | ✓550 TB/yr | 180 TB/yr |
| Warranty | EOL / seller only | ✓3 years |
| MTBF | ✓2.5M hours | 1.0M hours |
| Cache | 64 MB | ✓256 MB |
| Spindle speed | ✓7,200 RPM | 5,400 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.
related comparisons
HGST Ultrastar 7K4000 vs Hitachi Ultrastar 7K60004TB · SATAHGST Ultrastar 7K4000 vs Seagate Constellation ES.34TB · SATAHGST Ultrastar 7K4000 vs Seagate Exos 7E104TB · SATAHGST Ultrastar 7K4000 vs Seagate Exos 7E84TB · SATAHGST Ultrastar 7K4000 vs Seagate IronWolf Pro4TB · SATAHGST Ultrastar 7K4000 vs Toshiba MG044TB · SATA