Product comparison · 2 internal hard drives

Seagate 2 TB, SATA3, 7200 RPM vs Seagate Constellation ST91000641NS-40PK internal hard drive

Key differences

HDD capacity
- 2 TB, SATA3, 7200 RPM:2 TB
- Constellation ST91000641NS-40PK internal hard drive:1 TB
Storage drive buffer size
- 2 TB, SATA3, 7200 RPM:128 MB
- Constellation ST91000641NS-40PK internal hard drive:64 MB
Bytes per sector
- 2 TB, SATA3, 7200 RPM:4096
- Constellation ST91000641NS-40PK internal hard drive:512
Mean time between failures (MTBF)
- 2 TB, SATA3, 7200 RPM:2000000 h
- Constellation ST91000641NS-40PK internal hard drive:1400000 h
Power consumption (typical)
- 2 TB, SATA3, 7200 RPM:5.22 W
- Constellation ST91000641NS-40PK internal hard drive:5.21 W
Power consumption (idle)
- 2 TB, SATA3, 7200 RPM:3.87 W
- Constellation ST91000641NS-40PK internal hard drive:3.31 W
Operating temperature (T-T)
- 2 TB, SATA3, 7200 RPM:5 - 55 °C
- Constellation ST91000641NS-40PK internal hard drive:5 - 60 °C
Operating shock
- 2 TB, SATA3, 7200 RPM:25 G
- Constellation ST91000641NS-40PK internal hard drive:70 G

Differences highlightedShow differences only

Comparison of 2 TB, SATA3, 7200 RPM, ST91000641NS-40PK
27 specifications	A Seagate 2 TB, SATA3, 7200 RPM View product	B Seagate Constellation ST91000641NS-40PK internal hard drive Model ST91000641NS-40PK View product
Features4 differ
HDD capacityDiffers	2 TB	1 TB
HDD speed	7200 RPM	7200 RPM
HDD size	2.5"	2.5"
Interface	Serial ATA III	Serial ATA III
Type	HDD	HDD
Component forKnown for one	NAS	Unknown — not stated by the source
Storage drive buffer sizeDiffers	128 MB	64 MB
HDD interface transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
Average latency	4.16 ms	4.16 ms
Bytes per sectorDiffers	4096	512
Mean time between failures (MTBF)Differs	2000000 h	1400000 h
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
Power2 differ
Power consumption (typical)Differs	5.22 W	5.21 W
Power consumption (standby)Known for one	1.14 W	Unknown — not stated by the source
Power consumption (idle)Differs	3.87 W	3.31 W
Operating voltage	5 V	5 V
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Operating vibration	0.5 G	0.5 G
Non-operating vibration	3 G	3 G
Operating shockDiffers	25 G	70 G
Non-operating shock	400 G	400 G
Weight & dimensions1 differ
Width	70.1 mm	70.1 mm
Depth	100.5 mm	100.5 mm
Height	15 mm	15 mm
WeightDiffers	198 g	200 g
Packaging dataidentical
Quantity per pack	40 pc(s)	40 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.