Product comparison · 2 internal hard drives

Seagate Constellation ST32000645SS-20PK internal hard drive vs Seagate Constellation ST33000650NS-20PK internal hard drive

Key differences

HDD capacity
- Constellation ST32000645SS-20PK internal hard drive:2 TB
- Constellation ST33000650NS-20PK internal hard drive:3 TB
Interface
- Constellation ST32000645SS-20PK internal hard drive:SAS
- Constellation ST33000650NS-20PK internal hard drive:Serial ATA III
Power consumption (idle)
- Constellation ST32000645SS-20PK internal hard drive:7.4 W
- Constellation ST33000650NS-20PK internal hard drive:7.7 W
Power consumption (read)
- Constellation ST32000645SS-20PK internal hard drive:11.3 W
- Constellation ST33000650NS-20PK internal hard drive:10.7 W

Differences highlightedShow differences only

Comparison of ST32000645SS-20PK, ST33000650NS-20PK
23 specifications	A Seagate Constellation ST32000645SS-20PK internal hard drive Model ST32000645SS-20PK View product	B Seagate Constellation ST33000650NS-20PK internal hard drive Model ST33000650NS-20PK View product
Features2 differ
HDD capacityDiffers	2 TB	3 TB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	SAS	Serial ATA III
Type	HDD	HDD
Storage drive buffer size	64 MB	64 MB
Read seek time	8.5 ms	8.5 ms
Write seek time	9.5 ms	9.5 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	512	512
Mean time between failures (MTBF)	1200000 h	1200000 h
Power2 differ
Power consumption (idle)Differs	7.4 W	7.7 W
Power consumption (read)Differs	11.3 W	10.7 W
Operating voltage	5 / 12 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Non-operating vibration	4.9 G	4.9 G
Operating shock	70 G	70 G
Non-operating shock	300 G	300 G
Weight & dimensionsidentical
Width	101.8 mm	101.8 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
Weight	700 g	700 g
Packaging dataidentical
Quantity per pack	20 pc(s)	20 pc(s)

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