Product comparison · 2 internal hard drives

Seagate 1000GB 3.5 vs Seagate 250GB 2.5

Key differences

Differences highlightedShow differences only

Comparison of 1000GB 3.5, 250GB 2.5
25 specifications	A Seagate 1000GB 3.5 View product	B Seagate 250GB 2.5 View product
Features4 differ
HDD capacityDiffers	1 TB	250 GB
HDD speed	7200 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	Serial ATA II	Serial ATA II
Type	HDD	HDD
Component forKnown for one	Unknown — not stated by the source	Laptop
Storage drive buffer sizeDiffers	32 MB	16 MB
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesDiffers	50000	600000
Read seek timeKnown for one	8.5 ms	Unknown — not stated by the source
Write seek timeKnown for one	10 ms	Unknown — not stated by the source
Average latencyKnown for one	4.16 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	750000 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 conditions1 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-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	101.6 mm	69.8 mm
DepthDiffers	147 mm	100.3 mm
HeightDiffers	26.1 mm	9.5 mm
WeightDiffers	640 g	105 g
Other featuresidentical
Sustained data rateKnown for one	115 MB/s	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.