Product comparison · 2 internal hard drives

Seagate 250GB 3.5" SATA II vs Seagate Barracuda 7200.9 250, Ultra ATA/100

11specifications compared
7differ
4identical
23known for one product only

Key differences

The Seagate Barracuda 7200.9 250, Ultra ATA/100 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 15,359 more HDD cylinders than the Seagate Barracuda 7200.9 250, Ultra ATA/100 (16383 vs 1024). The Seagate Barracuda 7200.9 250, Ultra ATA/100 has 240 more HDD heads than the Seagate 250GB 3.5" SATA II (256 vs 16). Interface: Serial ATA II on the Seagate 250GB 3.5" SATA II, Ultra-ATA/100 on the Seagate Barracuda 7200.9 250, Ultra ATA/100.

Interface
- 250GB 3.5" SATA II:Serial ATA II
- Barracuda 7200.9 250, Ultra ATA/100:Ultra-ATA/100
Storage drive buffer size
- 250GB 3.5" SATA II:8 MB
- Barracuda 7200.9 250, Ultra ATA/100:16 MB
HDD number of cylinders
- 250GB 3.5" SATA II:16383
- Barracuda 7200.9 250, Ultra ATA/100:1024
HDD number of heads
- 250GB 3.5" SATA II:16
- Barracuda 7200.9 250, Ultra ATA/100:256
Depth
- 250GB 3.5" SATA II:147 mm
- Barracuda 7200.9 250, Ultra ATA/100:146.9 mm
Height
- 250GB 3.5" SATA II:26.1 mm
- Barracuda 7200.9 250, Ultra ATA/100:26 mm
Weight
- 250GB 3.5" SATA II:580 g
- Barracuda 7200.9 250, Ultra ATA/100:635 g

Side by side

Differences highlightedShow differences only

Comparison of 250GB 3.5" SATA II, Barracuda 7200.9 250, Ultra ATA/100
34 specifications	A Seagate 250GB 3.5" SATA II View product	B Seagate Barracuda 7200.9 250, Ultra ATA/100 View product
Features4 differ
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
InterfaceDiffers	Serial ATA II	Ultra-ATA/100
TypeKnown for one	HDD	Unknown — not stated by the source
Storage drive buffer sizeDiffers	8 MB	16 MB
HDD number of cylindersDiffers	16383	1024
HDD number of headsDiffers	16	256
Read seek timeKnown for one	8 ms	Unknown — not stated by the source
Write seek timeKnown for one	9 ms	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	5 / 12 V	Unknown — not stated by the source
Start-up currentKnown for one	2.6 A	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 60 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	-60.96 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-60.96 - 12192 m	Unknown — not stated by the source
Operating shockKnown for one	63 G	Unknown — not stated by the source
Non-operating shockKnown for one	350 G	Unknown — not stated by the source
Weight & dimensions3 differ
DepthDiffers	147 mm	146.9 mm
HeightDiffers	26.1 mm	26 mm
WeightDiffers	580 g	635 g
Other featuresidentical
HDD transfer rateKnown for one	Unknown — not stated by the source	100 Mbit/s
Power requirementsKnown for one	Unknown — not stated by the source	2.6
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	101.6 x 146.9 x 26.04 mm
InternalKnown for one	Unknown — not stated by the source	Yes
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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