Product comparison · 2 internal hard drives

Seagate Constellation ST2000NM0063-20PK internal hard drive vs Seagate Constellation ST91000641SS-20PK internal hard drive

Key differences

HDD capacity
- Constellation ST2000NM0063-20PK internal hard drive:2 TB
- Constellation ST91000641SS-20PK internal hard drive:1 TB
HDD size
- Constellation ST2000NM0063-20PK internal hard drive:3.5"
- Constellation ST91000641SS-20PK internal hard drive:2.5"
Storage drive buffer size
- Constellation ST2000NM0063-20PK internal hard drive:128 MB
- Constellation ST91000641SS-20PK internal hard drive:64 MB
Power consumption (typical)
- Constellation ST2000NM0063-20PK internal hard drive:9.59 W
- Constellation ST91000641SS-20PK internal hard drive:6.4 W
Power consumption (idle)
- Constellation ST2000NM0063-20PK internal hard drive:5.78 W
- Constellation ST91000641SS-20PK internal hard drive:3.85 W
Operating voltage
- Constellation ST2000NM0063-20PK internal hard drive:5 / 12 V
- Constellation ST91000641SS-20PK internal hard drive:5 V
Non-operating vibration
- Constellation ST2000NM0063-20PK internal hard drive:0.25 G
- Constellation ST91000641SS-20PK internal hard drive:3 G
Non-operating shock
- Constellation ST2000NM0063-20PK internal hard drive:300 G
- Constellation ST91000641SS-20PK internal hard drive:400 G

Differences highlightedShow differences only

Comparison of ST2000NM0063-20PK, ST91000641SS-20PK
24 specifications	A Seagate Constellation ST2000NM0063-20PK internal hard drive Model ST2000NM0063-20PK View product	B Seagate Constellation ST91000641SS-20PK internal hard drive Model ST91000641SS-20PK View product
Features3 differ
HDD capacityDiffers	2 TB	1 TB
HDD sizeDiffers	3.5"	2.5"
Storage drive buffer sizeDiffers	128 MB	64 MB
Write seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Power3 differ
Power consumption (typical)Differs	9.59 W	6.4 W
Power consumption (idle)Differs	5.78 W	3.85 W
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions2 differ
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationDiffers	0.25 G	3 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions4 differ
WidthDiffers	101.8 mm	70.1 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	15 mm
WeightDiffers	635 g	200 g

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.