Product comparison · 2 internal hard drives

Seagate Constellation ST32000645SS-20PK internal hard drive vs Seagate Constellation ST4000NM0054-20PK internal hard drive

Key differences

HDD capacity
- Constellation ST32000645SS-20PK internal hard drive:2 TB
- Constellation ST4000NM0054-20PK internal hard drive:4 TB
Storage drive buffer size
- Constellation ST32000645SS-20PK internal hard drive:64 MB
- Constellation ST4000NM0054-20PK internal hard drive:128 MB
Mean time between failures (MTBF)
- Constellation ST32000645SS-20PK internal hard drive:1200000 h
- Constellation ST4000NM0054-20PK internal hard drive:1400000 h
Power consumption (idle)
- Constellation ST32000645SS-20PK internal hard drive:7.4 W
- Constellation ST4000NM0054-20PK internal hard drive:5.73 W
Weight
- Constellation ST32000645SS-20PK internal hard drive:700 g
- Constellation ST4000NM0054-20PK internal hard drive:635 g

Differences highlightedShow differences only

Comparison of ST32000645SS-20PK, ST4000NM0054-20PK
26 specifications	A Seagate Constellation ST32000645SS-20PK internal hard drive Model ST32000645SS-20PK View product	B Seagate Constellation ST4000NM0054-20PK internal hard drive Model ST4000NM0054-20PK View product
Features3 differ
HDD capacityDiffers	2 TB	4 TB
Storage drive buffer sizeDiffers	64 MB	128 MB
Read seek timeKnown for one	8.5 ms	Unknown — not stated by the source
Write seek timeKnown for one	9.5 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	1200000 h	1400000 h
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Power1 differ
Power consumption (idle)Differs	7.4 W	5.73 W
Power consumption (read)Known for one	11.3 W	Unknown — not stated by the source
Power consumption (typical)Known for one	Unknown — not stated by the source	9.59 W
Operational conditionsidentical
Operating shockKnown for one	70 G	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	700 g	635 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	12 Gbit/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.