Product comparison · 2 internal hard drives

Seagate 250GB 3.5" SATA II vs Seagate 300GB 3.5" SATA II

27specifications compared
4differ
23identical
2known for one product only

Key differences

The Seagate 300GB 3.5" SATA II has 50 GB more HDD capacity than the Seagate 250GB 3.5" SATA II (300 GB vs 250 GB). The Seagate 300GB 3.5" SATA II has 8 MB more storage drive buffer size than the Seagate 250GB 3.5" SATA II (16 MB vs 8 MB). The Seagate 250GB 3.5" SATA II has 50 G more non-operating shock than the Seagate 300GB 3.5" SATA II (350 G vs 300 G).

HDD capacity
- 250GB 3.5" SATA II:250 GB
- 300GB 3.5" SATA II:300 GB
Storage drive buffer size
- 250GB 3.5" SATA II:8 MB
- 300GB 3.5" SATA II:16 MB
Non-operating shock
- 250GB 3.5" SATA II:350 G
- 300GB 3.5" SATA II:300 G
Weight
- 250GB 3.5" SATA II:580 g
- 300GB 3.5" SATA II:655 g

Side by side

Differences highlightedShow differences only

Comparison of 250GB 3.5" SATA II, 300GB 3.5" SATA II
29 specifications	A Seagate 250GB 3.5" SATA II View product	B Seagate 300GB 3.5" SATA II View product
Features2 differ
HDD capacityDiffers	250 GB	300 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
Interface	Serial ATA II	Serial ATA II
Type	HDD	HDD
Component forKnown for one	Unknown — not stated by the source	PC
Storage drive buffer sizeDiffers	8 MB	16 MB
HDD number of cylinders	16383	16383
HDD number of heads	16	16
Read seek time	8 ms	8 ms
Write seek time	9 ms	9 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	512	512
Start/stop cycles	50000	50000
Poweridentical
Operating voltage	5 / 12 V	5 / 12 V
Start-up current	2.6 A	2.6 A
Operational conditions1 differ
Operating temperature (T-T)	0 - 60 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitude	-60.96 - 3048 m	-60.96 - 3048 m
Non-operating altitude	-60.96 - 12192 m	-60.96 - 12192 m
Operating shock	63 G	63 G
Non-operating shockDiffers	350 G	300 G
Weight & dimensions1 differ
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	580 g	655 g
Other featuresidentical
Compatible productsKnown for one	Unknown — not stated by the source	PCs

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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