Product comparison · 2 internal hard drives

Seagate 200GB 3.5" Ultra ATA/100 vs Seagate 400GB 3.5" SATA II

27specifications compared
7differ
20identical
0known for one product only

Key differences

The Seagate 400GB 3.5" SATA II has 200 GB more HDD capacity than the Seagate 200GB 3.5" Ultra ATA/100 (400 GB vs 200 GB). The Seagate 400GB 3.5" SATA II has 8 MB more storage drive buffer size than the Seagate 200GB 3.5" Ultra ATA/100 (16 MB vs 8 MB). The Seagate 200GB 3.5" Ultra ATA/100 has 2.8 ms more read seek time than the Seagate 400GB 3.5" SATA II (11 ms vs 8.2 ms). Interface: Ultra-ATA/100 on the Seagate 200GB 3.5" Ultra ATA/100, Serial ATA II on the Seagate 400GB 3.5" SATA II.

HDD capacity
- 200GB 3.5" Ultra ATA/100:200 GB
- 400GB 3.5" SATA II:400 GB
Interface
- 200GB 3.5" Ultra ATA/100:Ultra-ATA/100
- 400GB 3.5" SATA II:Serial ATA II
Storage drive buffer size
- 200GB 3.5" Ultra ATA/100:8 MB
- 400GB 3.5" SATA II:16 MB
Read seek time
- 200GB 3.5" Ultra ATA/100:11 ms
- 400GB 3.5" SATA II:8.2 ms
Write seek time
- 200GB 3.5" Ultra ATA/100:12 ms
- 400GB 3.5" SATA II:9 ms
Non-operating shock
- 200GB 3.5" Ultra ATA/100:350 G
- 400GB 3.5" SATA II:300 G
Weight
- 200GB 3.5" Ultra ATA/100:580 g
- 400GB 3.5" SATA II:710 g

Side by side

Differences highlightedShow differences only

Comparison of 200GB 3.5" Ultra ATA/100, 400GB 3.5" SATA II
27 specifications	A Seagate 200GB 3.5" Ultra ATA/100 View product	B Seagate 400GB 3.5" SATA II View product
Features5 differ
HDD capacityDiffers	200 GB	400 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Ultra-ATA/100	Serial ATA II
Type	HDD	HDD
Storage drive buffer sizeDiffers	8 MB	16 MB
HDD number of cylinders	16383	16383
HDD number of heads	16	16
Read seek timeDiffers	11 ms	8.2 ms
Write seek timeDiffers	12 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	710 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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