Product comparison · 2 internal hard drives

Seagate 320GB 7200rpm HDD vs Seagate Momentus 5400.4 SATA 120GB

Key differences

Differences highlightedShow differences only

Comparison of 320GB 7200rpm HDD, Momentus 5400.4 SATA 120GB
18 specifications	A Seagate 320GB 7200rpm HDD View product	B Seagate Momentus 5400.4 SATA 120GB View product
Features2 differ
HDD capacityDiffers	320 GB	120 GB
HDD speedDiffers	7200 RPM	5400 RPM
Interface	Serial ATA	Serial ATA
Component for	Laptop	Laptop
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	8 MB
Read seek timeKnown for one	Unknown — not stated by the source	12 ms
Write 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
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	Unknown — not stated by the source	69.8 mm
DepthKnown for one	Unknown — not stated by the source	100.2 mm
HeightKnown for one	Unknown — not stated by the source	9.5 mm
WeightDiffers	220 g	102 g
Other featuresidentical
Internal	Yes	Yes
Compatible operating systemsKnown for one	Microsoft Windows Vista, XP, 2000 Pro Linux	Unknown — not stated by the source
Data transfer rateKnown for one	3 Gbit/s	Unknown — not stated by the source
Mac compatibilityKnown for one	Yes	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	5 V	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.