Product comparison · 2 internal hard drives

Seagate 250GB 3.5" SATA II vs Seagate 250GB 3.5" Ultra ATA/100

27specifications compared
3differ
24identical
0known for one product only

Key differences

The Seagate 250GB 3.5" Ultra ATA/100 has 3 ms more read seek time than the Seagate 250GB 3.5" SATA II (11 ms vs 8 ms). The Seagate 250GB 3.5" Ultra ATA/100 has 3 ms more write seek time than the Seagate 250GB 3.5" SATA II (12 ms vs 9 ms). Interface: Serial ATA II on the Seagate 250GB 3.5" SATA II, Ultra-ATA/100 on the Seagate 250GB 3.5" Ultra ATA/100.

Interface
- 250GB 3.5" SATA II:Serial ATA II
- 250GB 3.5" Ultra ATA/100:Ultra-ATA/100
Read seek time
- 250GB 3.5" SATA II:8 ms
- 250GB 3.5" Ultra ATA/100:11 ms
Write seek time
- 250GB 3.5" SATA II:9 ms
- 250GB 3.5" Ultra ATA/100:12 ms

Side by side

Differences highlightedShow differences only

Comparison of 250GB 3.5" SATA II, 250GB 3.5" Ultra ATA/100
27 specifications	A Seagate 250GB 3.5" SATA II View product	B Seagate 250GB 3.5" Ultra ATA/100 View product
Features3 differ
HDD capacity	250 GB	250 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA II	Ultra-ATA/100
Type	HDD	HDD
Storage drive buffer size	8 MB	8 MB
HDD number of cylinders	16383	16383
HDD number of heads	16	16
Read seek timeDiffers	8 ms	11 ms
Write seek timeDiffers	9 ms	12 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 conditionsidentical
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 shock	350 G	350 G
Weight & dimensionsidentical
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
Weight	580 g	580 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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