Product comparison · 2 internal hard drives

Seagate 2TB SATAIII vs Seagate Constellation ST91000641SS-30PK internal hard drive

16specifications compared
14differ
2identical
16known for one product only

Key differences

HDD capacity
- 2TB SATAIII:2 TB
- Constellation ST91000641SS-30PK internal hard drive:1 TB
HDD speed
- 2TB SATAIII:5900 RPM
- Constellation ST91000641SS-30PK internal hard drive:7200 RPM
HDD size
- 2TB SATAIII:3.5"
- Constellation ST91000641SS-30PK internal hard drive:2.5"
Interface
- 2TB SATAIII:Serial ATA III
- Constellation ST91000641SS-30PK internal hard drive:SAS
Mean time between failures (MTBF)
- 2TB SATAIII:1000000 h
- Constellation ST91000641SS-30PK internal hard drive:1400000 h
Power consumption (typical)
- 2TB SATAIII:4.3 W
- Constellation ST91000641SS-30PK internal hard drive:6.4 W
Power consumption (idle)
- 2TB SATAIII:3 W
- Constellation ST91000641SS-30PK internal hard drive:3.85 W
Operating voltage
- 2TB SATAIII:5 / 12 V
- Constellation ST91000641SS-30PK internal hard drive:5 V

Side by side

Differences highlightedShow differences only

Comparison of 2TB SATAIII, ST91000641SS-30PK
32 specifications	A Seagate 2TB SATAIII View product	B Seagate Constellation ST91000641SS-30PK internal hard drive Model ST91000641SS-30PK View product
Features5 differ
HDD capacityDiffers	2 TB	1 TB
HDD speedDiffers	5900 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA III	SAS
HDD interface transfer rateKnown for one	Unknown — not stated by the source	6 Gbit/s
Read seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	9.5 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Mean time between failures (MTBF)Differs	1000000 h	1400000 h
Component forKnown for one	NAS	Unknown — not stated by the source
HDD sustained transfer rateKnown for one	159 MiB/s	Unknown — not stated by the source
Start/stop cyclesKnown for one	600000	Unknown — not stated by the source
Power3 differ
Power consumption (typical)Differs	4.3 W	6.4 W
Power consumption (idle)Differs	3 W	3.85 W
Operating voltageDiffers	5 / 12 V	5 V
Power consumption (standby)Known for one	0.3 W	Unknown — not stated by the source
Start-up currentKnown for one	2 A	Unknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 70 °C	5 - 60 °C
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 shockKnown for one	Unknown — not stated by the source	70 G
Non-operating shockKnown for one	Unknown — not stated by the source	400 G
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	101.6 mm	70.1 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	15 mm
WeightDiffers	535 g	200 g
Packaging data1 differ
Quantity per packDiffers	20 pc(s)	30 pc(s)
Packaging contentidentical
Storage drive adapter includedKnown 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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