Interface: ST4000NE001 lists SATA 6 Gb/s; WD4004FRYZ lists SATA 6Gb/s.
Workload rating (TB/year): ST4000NE001 lists 300; WD4004FRYZ lists 550.
Sustained transfer (up to MB/s): ST4000NE001 lists 220; WD4004FRYZ lists 267.

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

Show differences only

Manufacturer specifications for ST4000NE001 and WD4004FRYZ
Specification	ST4000NE001	WD4004FRYZ
Manufacturer	Seagate	Western Digital
Product family	IronWolf Pro	WD Gold
Model number	ST4000NE001	WD4004FRYZ
Capacity (TB)	4	4
RPM	7200	7200
Interface	SATA 6 Gb/s	SATA 6Gb/s
Recording	CMR	CMR
Cache (MB)	256	256
Form factor	3.5-inch	3.5-inch
Power-on hours per year	8760	Not recorded
Workload rating (TB/year)	300	550
Average operating power (W)	8.7	Not recorded
Rotational vibration sensors	Yes	Not recorded
Manufacturer limited warranty	5 years (eligible new drives)	5 years (eligible new drives)
Sustained transfer (up to MB/s)	220	267
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.

Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.

Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.