Product comparison · 2 internal hard drives

2-Power 900GB 10k RPM 2.5" HDD vs Seagate 400GB 3.5

10specifications compared
9differ
1identical
20known for one product only

Key differences

HDD capacity
- 900GB 10k RPM 2.5" HDD:900 GB
- 400GB 3.5:400 GB
HDD speed
- 900GB 10k RPM 2.5" HDD:10000 RPM
- 400GB 3.5:7200 RPM
HDD size
- 900GB 10k RPM 2.5" HDD:2.5"
- 400GB 3.5:3.5"
Interface
- 900GB 10k RPM 2.5" HDD:SAS
- 400GB 3.5:Serial ATA II
Operating voltage
- 900GB 10k RPM 2.5" HDD:5 V
- 400GB 3.5:5 / 12 V
Width
- 900GB 10k RPM 2.5" HDD:135 mm
- 400GB 3.5:101.6 mm
Depth
- 900GB 10k RPM 2.5" HDD:78 mm
- 400GB 3.5:147 mm
Height
- 900GB 10k RPM 2.5" HDD:16 mm
- 400GB 3.5:26.1 mm

Side by side

Differences highlightedShow differences only

Comparison of 900GB 10k RPM 2.5" HDD, 400GB 3.5
30 specifications	A 2-Power 900GB 10k RPM 2.5" HDD View product	B Seagate 400GB 3.5 View product
Features4 differ
HDD capacityDiffers	900 GB	400 GB
HDD speedDiffers	10000 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	SAS	Serial ATA II
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
HDD number of cylindersKnown for one	Unknown — not stated by the source	16383
HDD number of headsKnown for one	Unknown — not stated by the source	5
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	10 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Component forKnown for one	PC	Unknown — not stated by the source
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Start-up currentKnown for one	Unknown — not stated by the source	2 A
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m
Operating shockKnown for one	Unknown — not stated by the source	68 G
Non-operating shockKnown for one	Unknown — not stated by the source	300 G
Weight & dimensions4 differ
WidthDiffers	135 mm	101.6 mm
DepthDiffers	78 mm	147 mm
HeightDiffers	16 mm	26.1 mm
WeightDiffers	258 g	635 g
Other featuresidentical
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Yes
Linux operating systems supportedKnown for one	Unknown — not stated by the source	Yes

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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