Product comparison · 2 internal hard drives

Seagate 20.4GB 5400RPM HDD vs Seagate 250GB 2.5

12specifications compared
10differ
2identical
14known for one product only

Key differences

HDD capacity
- 20.4GB 5400RPM HDD:20 GB
- 250GB 2.5:250 GB
HDD speed
- 20.4GB 5400RPM HDD:5400 RPM
- 250GB 2.5:7200 RPM
HDD size
- 20.4GB 5400RPM HDD:3.5"
- 250GB 2.5:2.5"
Interface
- 20.4GB 5400RPM HDD:Ultra-ATA/100
- 250GB 2.5:Serial ATA II
Start/stop cycles
- 20.4GB 5400RPM HDD:50000
- 250GB 2.5:600000
Operating voltage
- 20.4GB 5400RPM HDD:5 / 12 V
- 250GB 2.5:5 V
Width
- 20.4GB 5400RPM HDD:101.8 mm
- 250GB 2.5:69.8 mm
Depth
- 20.4GB 5400RPM HDD:147 mm
- 250GB 2.5:100.3 mm

Side by side

Differences highlightedShow differences only

Comparison of 20.4GB 5400RPM HDD, 250GB 2.5
26 specifications	A Seagate 20.4GB 5400RPM HDD View product	B Seagate 250GB 2.5 View product
Features5 differ
HDD capacityDiffers	20 GB	250 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA II
Component forKnown for one	Unknown — not stated by the source	Laptop
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
Start/stop cyclesDiffers	50000	600000
HDD number of cylindersKnown for one	16383	Unknown — not stated by the source
HDD number of headsKnown for one	16	Unknown — not stated by the source
Read seek timeKnown for one	9.9 ms	Unknown — not stated by the source
Write seek timeKnown for one	10.9 ms	Unknown — not stated by the source
Average latencyKnown for one	5.55 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	500000 h	Unknown — not stated by the source
Power1 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	1.554 W
Power consumption (idle)Known for one	Unknown — not stated by the source	0.67 W
Operating voltageDiffers	5 / 12 V	5 V
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 shockKnown for one	Unknown — not stated by the source	350 G
Non-operating shockKnown for one	Unknown — not stated by the source	1000 G
Weight & dimensions4 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100.3 mm
HeightDiffers	26.1 mm	9.5 mm
WeightDiffers	590 g	105 g

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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