Average idle power (W): ST8000VX004 lists 7.06; ST8000VX009 lists 3.4.
Average operating power (W): ST8000VX004 lists 8.73; ST8000VX009 lists 5.3.
Sustained transfer (up to MB/s): ST8000VX004 lists 210; ST8000VX009 lists 180.

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 ST8000VX004 and ST8000VX009
Specification	ST8000VX004	ST8000VX009
Manufacturer	Seagate	Seagate
Product family	SkyHawk	SkyHawk
Model number	ST8000VX004	ST8000VX009
Capacity (TB)	8	8
Interface	SATA 6 Gb/s	SATA 6 Gb/s
Recording	CMR	CMR
Cache (MB)	256	256
Form factor	3.5-inch	3.5-inch
Load/unload cycles	600000	600000
Average idle power (W)	7.06	3.4
Power-on hours per year	8760	8760
Cameras supported (up to)	64	64
Workload rating (TB/year)	180	180
Average operating power (W)	8.73	5.3
Rotational vibration sensors	Yes	Not recorded
Manufacturer limited warranty	3 years (eligible new drives)	3 years (eligible new drives)
Sustained transfer (up to MB/s)	210	180

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