Product comparison · 2 internal hard drives

HP 250GB 5400RPM 2.5" vs Seagate Barracuda 320GB

5specifications compared
3differ
2identical
29known for one product only

Key differences

HDD capacity
- 250GB 5400RPM 2.5":250 GB
- Barracuda 320GB:320 GB
HDD speed
- 250GB 5400RPM 2.5":5400 RPM
- Barracuda 320GB:7200 RPM
Interface
- 250GB 5400RPM 2.5":Serial ATA
- Barracuda 320GB:Serial ATA II

Side by side

Differences highlightedShow differences only

Comparison of 250GB 5400RPM 2.5", Barracuda 320GB
34 specifications	A HP 250GB 5400RPM 2.5"View product	B Seagate Barracuda 320GB View product
Features3 differ
HDD capacityDiffers	250 GB	320 GB
HDD speedDiffers	5400 RPM	7200 RPM
InterfaceDiffers	Serial ATA	Serial ATA II
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	8 MB
HDD number of cylindersKnown for one	Unknown — not stated by the source	16383
HDD number of headsKnown for one	Unknown — not stated by the source	4
Read seek timeKnown for one	Unknown — not stated by the source	0.8 ms
Write seek timeKnown for one	Unknown — not stated by the source	1 ms
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Poweridentical
Operating voltage	5 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	2.8 A
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationKnown for one	Unknown — not stated by the source	5–22Hz: 0.25Gs, 22–350Hz: 0.50Gs, 350–500Hz: 0.25Gs
Non-operating vibrationKnown for one	Unknown — not stated by the source	5–22Hz: 0.25Gs, 22–350Hz: 5.0Gs, 350–500Hz: 1.0Gs
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3.048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12.192 m
Operating shockKnown for one	Unknown — not stated by the source	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	350 G
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	101.6 mm
DepthKnown for one	Unknown — not stated by the source	147 mm
HeightKnown for one	Unknown — not stated by the source	26.1 mm
WeightKnown for one	Unknown — not stated by the source	635 g
Other featuresidentical
Internal	Yes	Yes
Maximum data transfer rateKnown for one	Unknown — not stated by the source	1030 Mbit/s
Recording densityKnown for one	Unknown — not stated by the source	781 kbit/inch
USB poweredKnown for one	Unknown — not stated by the source	No
Sustained data rateKnown for one	Unknown — not stated by the source	72 MB/s
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	0-4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	0-6

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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