Product comparison · 2 internal hard drives

Seagate 400GB 3.5" Ultra ATA/100 vs Seagate 500GB 3.5" Ultra ATA/100

25specifications compared
3differ
22identical
5known for one product only

Key differences

The Seagate 500GB 3.5" Ultra ATA/100 has 100 GB more HDD capacity than the Seagate 400GB 3.5" Ultra ATA/100 (500 GB vs 400 GB). The Seagate 400GB 3.5" Ultra ATA/100 has 8 MB more storage drive buffer size than the Seagate 500GB 3.5" Ultra ATA/100 (16 MB vs 8 MB). The Seagate 400GB 3.5" Ultra ATA/100 has 0.1 mm more height than the Seagate 500GB 3.5" Ultra ATA/100 (26.1 mm vs 26 mm).

HDD capacity
- 400GB 3.5" Ultra ATA/100:400 GB
- 500GB 3.5" Ultra ATA/100:500 GB
Storage drive buffer size
- 400GB 3.5" Ultra ATA/100:16 MB
- 500GB 3.5" Ultra ATA/100:8 MB
Height
- 400GB 3.5" Ultra ATA/100:26.1 mm
- 500GB 3.5" Ultra ATA/100:26 mm

Side by side

Differences highlightedShow differences only

Comparison of 400GB 3.5" Ultra ATA/100, 500GB 3.5" Ultra ATA/100
30 specifications	A Seagate 400GB 3.5" Ultra ATA/100 View product	B Seagate 500GB 3.5" Ultra ATA/100 View product
Features2 differ
HDD capacityDiffers	400 GB	500 GB
Storage drive buffer sizeDiffers	16 MB	8 MB
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Poweridentical
Start-up currentKnown for one	Unknown — not stated by the source	2.6 A
Weight & dimensions1 differ
HeightDiffers	26.1 mm	26 mm
Other featuresidentical
Drive devices burst data transfer rate (DMA)Known for one	Unknown — not stated by the source	2
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	5

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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