Product comparison · 2 internal hard drives

Seagate 300GB 3.5" SATA II vs Seagate Barracuda 7200.9 250, Ultra ATA/100

11specifications compared
7differ
4identical
25known for one product only

Key differences

The Seagate 300GB 3.5" SATA II has 50 GB more HDD capacity than the Seagate Barracuda 7200.9 250, Ultra ATA/100 (300 GB vs 250 GB). The Seagate 300GB 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 300GB 3.5" SATA II (256 vs 16). Interface: Serial ATA II on the Seagate 300GB 3.5" SATA II, Ultra-ATA/100 on the Seagate Barracuda 7200.9 250, Ultra ATA/100.

HDD capacity
- 300GB 3.5" SATA II:300 GB
- Barracuda 7200.9 250, Ultra ATA/100:250 GB
Interface
- 300GB 3.5" SATA II:Serial ATA II
- Barracuda 7200.9 250, Ultra ATA/100:Ultra-ATA/100
HDD number of cylinders
- 300GB 3.5" SATA II:16383
- Barracuda 7200.9 250, Ultra ATA/100:1024
HDD number of heads
- 300GB 3.5" SATA II:16
- Barracuda 7200.9 250, Ultra ATA/100:256
Depth
- 300GB 3.5" SATA II:147 mm
- Barracuda 7200.9 250, Ultra ATA/100:146.9 mm
Height
- 300GB 3.5" SATA II:26.1 mm
- Barracuda 7200.9 250, Ultra ATA/100:26 mm
Weight
- 300GB 3.5" SATA II:655 g
- Barracuda 7200.9 250, Ultra ATA/100:635 g

Side by side

Differences highlightedShow differences only

Comparison of 300GB 3.5" SATA II, Barracuda 7200.9 250, Ultra ATA/100
36 specifications	A Seagate 300GB 3.5" SATA II View product	B Seagate Barracuda 7200.9 250, Ultra ATA/100 View product
Features4 differ
HDD capacityDiffers	300 GB	250 GB
HDD speed	7200 RPM	7200 RPM
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
Component forKnown for one	PC	Unknown — not stated by the source
Storage drive buffer size	16 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
Average latency	4.16 ms	4.16 ms
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	300 G	Unknown — not stated by the source
Weight & dimensions3 differ
Width	101.6 mm	101.6 mm
DepthDiffers	147 mm	146.9 mm
HeightDiffers	26.1 mm	26 mm
WeightDiffers	655 g	635 g
Other featuresidentical
Compatible productsKnown for one	PCs	Unknown — not stated by the source
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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