Interface: ST14000NT001 lists SATA 6 Gb/s; WD142KRYZ lists SATA 6Gb/s.
Cache (MB): ST14000NT001 lists 256; WD142KRYZ lists 512.
Sustained transfer (up to MB/s): ST14000NT001 lists 270; WD142KRYZ lists 262.

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 ST14000NT001 and WD142KRYZ
Specification	ST14000NT001	WD142KRYZ
Manufacturer	Seagate	Western Digital
Product family	IronWolf Pro	WD Gold
Model number	ST14000NT001	WD142KRYZ
Capacity (TB)	14	14
RPM	7200	7200
Interface	SATA 6 Gb/s	SATA 6Gb/s
Recording	CMR	CMR
Cache (MB)	256	512
Form factor	3.5-inch	3.5-inch
Power-on hours per year	8760	Not recorded
Workload rating (TB/year)	550	550
Average operating power (W)	7.6	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)	270	262
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.