Product comparison · 2 internal hard drives

HP 900GB SAS vs Seagate Constellation ST91000642SS-40PK internal hard drive

7specifications compared
3differ
4identical
20known for one product only

Key differences

The HP 900GB SAS has 2,800 RPM more HDD speed than the Seagate Constellation ST91000642SS-40PK internal hard drive (10000 RPM vs 7200 RPM). HDD capacity: 900 GB on the HP 900GB SAS, 1 TB on the Seagate Constellation ST91000642SS-40PK internal hard drive. Component for: PC on the HP 900GB SAS, Server/workstation on the Seagate Constellation ST91000642SS-40PK internal hard drive.

HDD capacity
- 900GB SAS:900 GB
- Constellation ST91000642SS-40PK internal hard drive:1 TB
HDD speed
- 900GB SAS:10000 RPM
- Constellation ST91000642SS-40PK internal hard drive:7200 RPM
Component for
- 900GB SAS:PC
- Constellation ST91000642SS-40PK internal hard drive:Server/workstation

Side by side

Differences highlightedShow differences only

Comparison of 900GB SAS, ST91000642SS-40PK
27 specifications	A HP 900GB SAS View product	B Seagate Constellation ST91000642SS-40PK internal hard drive Model ST91000642SS-40PK View product
Features3 differ
HDD capacityDiffers	900 GB	1 TB
HDD speedDiffers	10000 RPM	7200 RPM
HDD size	2.5"	2.5"
Interface	SAS	SAS
Type	HDD	HDD
Component forDiffers	PC	Server/workstation
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	64 MB
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
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
HDD interface transfer rateKnown for one	6 Gbit/s	Unknown — not stated by the source
Poweridentical
Power consumption (idle)Known for one	Unknown — not stated by the source	3.85 W
Power consumption (read)Known for one	Unknown — not stated by the source	6.4 W
Operating voltage	5 V	5 V
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	5 - 60 °C
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	3 G
Operating shockKnown for one	Unknown — not stated by the source	70 G
Non-operating shockKnown for one	Unknown — not stated by the source	400 G
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	70.1 mm
DepthKnown for one	Unknown — not stated by the source	100.5 mm
HeightKnown for one	Unknown — not stated by the source	15 mm
WeightKnown for one	Unknown — not stated by the source	200 g
Packaging dataidentical
Quantity per packKnown for one	Unknown — not stated by the source	40 pc(s)
Other featuresidentical
Security algorithmsKnown for one	Unknown — not stated by the source	256-bit AES, FIPS 140-2
Packaging contentidentical
Storage drive adapter includedKnown for one	No	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.

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