Product comparison · 2 internal hard drives

Seagate ST31000524AS, 20pack vs Seagate Constellation ST9250612NS internal hard drive

21specifications compared
14differ
7identical
15known for one product only

Key differences

HDD capacity
- ST31000524AS, 20pack:1 TB
- Constellation ST9250612NS internal hard drive:250 GB
HDD size
- ST31000524AS, 20pack:3.5"
- Constellation ST9250612NS internal hard drive:2.5"
Storage drive buffer size
- ST31000524AS, 20pack:32 MB
- Constellation ST9250612NS internal hard drive:64 MB
Read seek time
- ST31000524AS, 20pack:8.5 ms
- Constellation ST9250612NS internal hard drive:7.5 ms
Write seek time
- ST31000524AS, 20pack:9.5 ms
- Constellation ST9250612NS internal hard drive:8.5 ms
Average latency
- ST31000524AS, 20pack:4.17 ms
- Constellation ST9250612NS internal hard drive:4.16 ms
Operating voltage
- ST31000524AS, 20pack:5 / 12 V
- Constellation ST9250612NS internal hard drive:5 V
Operating temperature (T-T)
- ST31000524AS, 20pack:0 - 60 °C
- Constellation ST9250612NS internal hard drive:5 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of ST31000524AS, 20pack, ST9250612NS
36 specifications	A Seagate ST31000524AS, 20pack View product	B Seagate Constellation ST9250612NS internal hard drive Model ST9250612NS View product
Features6 differ
HDD capacityDiffers	1 TB	250 GB
HDD speed	7200 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	Serial ATA	Serial ATA
Storage drive buffer sizeDiffers	32 MB	64 MB
HDD number of headsKnown for one	Unknown — not stated by the source	2
Read seek timeDiffers	8.5 ms	7.5 ms
Write seek timeDiffers	9.5 ms	8.5 ms
Track to track seek timeKnown for one	Unknown — not stated by the source	0.44 ms
Average latencyDiffers	4.17 ms	4.16 ms
Bytes per sector	512	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	300000
Power1 differ
Operating voltageDiffers	5 / 12 V	5 V
Start-up current	2 A	2 A
Power consumption (idle)Known for one	5 W	Unknown — not stated by the source
Operational conditions2 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m
Operating shock	70 G	70 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions4 differ
WidthDiffers	101.6 mm	69.8 mm
DepthDiffers	147 mm	100 mm
HeightDiffers	20.2 mm	15 mm
WeightDiffers	4 kg	179 g
Other features1 differ
Data transfer rateDiffers	6 Gbit/s	4.69 Gbit/s
Disks included quantityKnown for one	Unknown — not stated by the source	1 pc(s)
Internal	Yes	Yes
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Number of products includedKnown for one	20 pc(s)	Unknown — not stated by the source
Recording densityKnown for one	329 kbit/inch	Unknown — not stated by the source
USB poweredKnown for one	No	Unknown — not stated by the source

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.

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