Product comparison · 2 internal hard drives

Seagate 1 TB, 2.5", SATA 6Gb/s vs Seagate Constellation ST91000641NS-40PK internal hard drive

Key differences

Storage drive buffer size
- 1 TB, 2.5", SATA 6Gb/s:128 MB
- Constellation ST91000641NS-40PK internal hard drive:64 MB
Bytes per sector
- 1 TB, 2.5", SATA 6Gb/s:4096
- Constellation ST91000641NS-40PK internal hard drive:512
Power consumption (idle)
- 1 TB, 2.5", SATA 6Gb/s:3.51 W
- Constellation ST91000641NS-40PK internal hard drive:3.31 W
Operating temperature (T-T)
- 1 TB, 2.5", SATA 6Gb/s:5 - 55 °C
- Constellation ST91000641NS-40PK internal hard drive:5 - 60 °C
Operating shock
- 1 TB, 2.5", SATA 6Gb/s:25 G
- Constellation ST91000641NS-40PK internal hard drive:70 G
Weight
- 1 TB, 2.5", SATA 6Gb/s:190 g
- Constellation ST91000641NS-40PK internal hard drive:200 g

Differences highlightedShow differences only

Comparison of 1 TB, 2.5", SATA 6Gb/s, ST91000641NS-40PK
27 specifications	A Seagate 1 TB, 2.5", SATA 6Gb/s View product	B Seagate Constellation ST91000641NS-40PK internal hard drive Model ST91000641NS-40PK View product
Features2 differ
Storage drive buffer sizeDiffers	128 MB	64 MB
Bytes per sectorDiffers	4096	512
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
Power1 differ
Power consumption (standby)Known for one	1.14 W	Unknown — not stated by the source
Power consumption (idle)Differs	3.51 W	3.31 W
Power consumption (read)Known for one	4.74 W	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	5.21 W
Operational conditions2 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Operating shockDiffers	25 G	70 G
Weight & dimensions1 differ
WeightDiffers	190 g	200 g
Logistics dataidentical
Products per palletKnown for one	50 pc(s)	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.