Product comparison · 2 internal hard drives

Seagate Constellation ST91000642SS internal hard drive vs Seagate Constellation ST9250612NS internal hard drive

Key differences

HDD capacity
- Constellation ST91000642SS internal hard drive:1 TB
- Constellation ST9250612NS internal hard drive:250 GB
Interface
- Constellation ST91000642SS internal hard drive:SAS
- Constellation ST9250612NS internal hard drive:Serial ATA
HDD number of heads
- Constellation ST91000642SS internal hard drive:8
- Constellation ST9250612NS internal hard drive:2
Weight
- Constellation ST91000642SS internal hard drive:200 g
- Constellation ST9250612NS internal hard drive:179 g

Differences highlightedShow differences only

Comparison of ST91000642SS, ST9250612NS
35 specifications	A Seagate Constellation ST91000642SS internal hard drive Model ST91000642SS View product	B Seagate Constellation ST9250612NS internal hard drive Model ST9250612NS View product
Features3 differ
HDD capacityDiffers	1 TB	250 GB
InterfaceDiffers	SAS	Serial ATA
Component forKnown for one	Server/workstation	Unknown — not stated by the source
HDD number of headsDiffers	8	2
Mean time between failures (MTBF)Known for one	1400000 h	Unknown — not stated by the source
Track to track seek timeKnown for one	Unknown — not stated by the source	0.44 ms
Start/stop cyclesKnown for one	Unknown — not stated by the source	300000
Poweridentical
Power consumption (typical)Known for one	6.35 W	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	200 g	179 g
Other featuresidentical
Disks included quantityKnown for one	Unknown — not stated by the source	1 pc(s)

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.