Product comparison · 2 internal hard drives

Seagate Constellation ST32000645SS-20PK internal hard drive vs Seagate Savvio ST900MM0026-20PK internal hard drive

Key differences

HDD capacity
- Constellation ST32000645SS-20PK internal hard drive:2 TB
- Savvio ST900MM0026-20PK internal hard drive:900 GB
HDD speed
- Constellation ST32000645SS-20PK internal hard drive:7200 RPM
- Savvio ST900MM0026-20PK internal hard drive:10000 RPM
HDD size
- Constellation ST32000645SS-20PK internal hard drive:3.5"
- Savvio ST900MM0026-20PK internal hard drive:2.5"
Average latency
- Constellation ST32000645SS-20PK internal hard drive:4.16 ms
- Savvio ST900MM0026-20PK internal hard drive:2.9 ms
Power consumption (idle)
- Constellation ST32000645SS-20PK internal hard drive:7.4 W
- Savvio ST900MM0026-20PK internal hard drive:3.9 W
Operating voltage
- Constellation ST32000645SS-20PK internal hard drive:5 / 12 V
- Savvio ST900MM0026-20PK internal hard drive:5 V
Operating temperature (T-T)
- Constellation ST32000645SS-20PK internal hard drive:5 - 60 °C
- Savvio ST900MM0026-20PK internal hard drive:5 - 55 °C
Non-operating vibration
- Constellation ST32000645SS-20PK internal hard drive:4.9 G
- Savvio ST900MM0026-20PK internal hard drive:3 G

Differences highlightedShow differences only

Comparison of ST32000645SS-20PK, ST900MM0026-20PK
28 specifications	A Seagate Constellation ST32000645SS-20PK internal hard drive Model ST32000645SS-20PK View product	B Seagate Savvio ST900MM0026-20PK internal hard drive Model ST900MM0026-20PK View product
Features4 differ
HDD capacityDiffers	2 TB	900 GB
HDD speedDiffers	7200 RPM	10000 RPM
HDD sizeDiffers	3.5"	2.5"
HDD number of cylindersKnown for one	Unknown — not stated by the source	3
HDD number of headsKnown for one	Unknown — not stated by the source	6
Average latencyDiffers	4.16 ms	2.9 ms
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)Known for one	1200000 h	Unknown — not stated by the source
Power2 differ
Power consumption (idle)Differs	7.4 W	3.9 W
Operating voltageDiffers	5 / 12 V	5 V
Power consumption (read)Known for one	11.3 W	Unknown — not stated by the source
Operational conditions4 differ
Operating temperature (T-T)Differs	5 - 60 °C	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationDiffers	4.9 G	3 G
Operating shockDiffers	70 G	40 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	700 g	212 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	6 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.