Product comparison · 2 internal hard drives

Seagate Desktop HDD ST250DM000 internal hard drive vs Seagate Desktop HDD ST320DM000 internal hard drive

Key differences

HDD capacity
- Desktop HDD ST250DM000 internal hard drive:250 GB
- Desktop HDD ST320DM000 internal hard drive:320 GB
HDD number of heads
- Desktop HDD ST250DM000 internal hard drive:1
- Desktop HDD ST320DM000 internal hard drive:2

Differences highlightedShow differences only

Comparison of ST250DM000, ST320DM000
35 specifications	A Seagate Desktop HDD ST250DM000 internal hard drive Model ST250DM000 View product	B Seagate Desktop HDD ST320DM000 internal hard drive Model ST320DM000 View product
Features2 differ
HDD capacityDiffers	250 GB	320 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Interface	Serial ATA	Serial ATA
Storage drive buffer size	16 MB	16 MB
HDD number of headsDiffers	1	2
Read seek time	8.5 ms	8.5 ms
Write seek time	9.5 ms	9.5 ms
Track to track seek time	1.2 ms	1.2 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	4096	4096
Start/stop cycles	50000	50000
Poweridentical
Operating voltage	5 / 12 V	5 / 12 V
Start-up current	2 A	2 A
Operational conditionsidentical
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating vibration	0.5 G	0.5 G
Non-operating vibration	3 G	3 G
Operating altitude	-304.8 - 3048 m	-304.8 - 3048 m
Non-operating altitude	-304.8 - 12192 m	-304.8 - 12192 m
Operating shock	70 G	70 G
Non-operating shock	350 G	350 G
Weight & dimensionsidentical
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	20 mm	20 mm
Weight	415 g	415 g
Other featuresidentical
Data transfer rate	4.69 Gbit/s	4.69 Gbit/s
Disks included quantity	1 pc(s)	1 pc(s)
Drive ready time	8.5 s	8.5 s
Internal	Yes	Yes
Plug and Play	Yes	Yes
Recording density	1413 kbit/inch	1413 kbit/inch
Track density	236 kt/in	236 kt/in

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.