Product comparison · 2 internal hard drives

HP 20-GB, UATA, 100/7200 vs Seagate 320GB Momentus 5400.5 HDD

5specifications compared
4differ
1identical
21known for one product only

Key differences

HDD capacity
- 20-GB, UATA, 100/7200:20 GB
- 320GB Momentus 5400.5 HDD:320 GB
HDD speed
- 20-GB, UATA, 100/7200:7200 RPM
- 320GB Momentus 5400.5 HDD:5400 RPM
Interface
- 20-GB, UATA, 100/7200:Ultra-ATA/100
- 320GB Momentus 5400.5 HDD:Serial ATA
Weight
- 20-GB, UATA, 100/7200:907 g
- 320GB Momentus 5400.5 HDD:98.5 g

Side by side

Differences highlightedShow differences only

Comparison of 20-GB, UATA, 100/7200, 320GB Momentus 5400.5 HDD
26 specifications	A HP 20-GB, UATA, 100/7200 View product	B Seagate 320GB Momentus 5400.5 HDD View product
Features3 differ
HDD capacityDiffers	20 GB	320 GB
HDD speedDiffers	7200 RPM	5400 RPM
InterfaceDiffers	Ultra-ATA/100	Serial ATA
Component forKnown for one	Unknown — not stated by the source	Laptop
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	8 MB
HDD number of headsKnown for one	Unknown — not stated by the source	4
Read seek timeKnown for one	Unknown — not stated by the source	14 ms
Average latencyKnown for one	Unknown — not stated by the source	5.6 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	600000
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	500000 h
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
TypeKnown for one	HDD	Unknown — not stated by the source
Poweridentical
Start-up currentKnown for one	Unknown — not stated by the source	1 A
Operating voltageKnown for one	5 / 12 V	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating shockKnown for one	Unknown — not stated by the source	350 G
Non-operating shockKnown for one	Unknown — not stated by the source	1000 G
Weight & dimensions1 differ
WidthKnown for one	Unknown — not stated by the source	69.8 mm
DepthKnown for one	Unknown — not stated by the source	100.5 mm
HeightKnown for one	Unknown — not stated by the source	9.5 mm
WeightDiffers	907 g	98.5 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Disks included quantityKnown for one	Unknown — not stated by the source	2 pc(s)

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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