Product comparison · 2 internal hard drives

Seagate 640GB 2.5" SATA vs Seagate Momentus 5400.6 320-GB

Key differences

Differences highlightedShow differences only

Comparison of 640GB 2.5" SATA, Momentus 5400.6 320-GB
25 specifications	A Seagate 640GB 2.5" SATA View product	B Seagate Momentus 5400.6 320-GB View product
Features4 differ
HDD capacityDiffers	640 GB	320 GB
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
InterfaceDiffers	Serial ATA II	Serial ATA
TypeKnown for one	HDD	Unknown — not stated by the source
HDD interface transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Read seek timeDiffers	11 ms	14 ms
Average latencyDiffers	5.5 ms	5.6 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Poweridentical
Power consumption (idle)Known for one	0.68 W	Unknown — not stated by the source
Operating voltageKnown for one	5 V	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 shockKnown for one	350 G	Unknown — not stated by the source
Non-operating shockKnown for one	800 G	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	100 g	98.8 g
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84717050	Unknown — not stated by the source
Other featuresidentical
Product colourKnown for one	Black	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	26 dB	Unknown — not stated by the source

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.