Product comparison · 2 internal hard drives

Seagate 120GB 2.5" SATA II vs Seagate Momentus 5400.3 - 100GB - 5400rpm SATA

10specifications compared
8differ
2identical
24known for one product only

Key differences

The Seagate 120GB 2.5" SATA II has 20 GB more HDD capacity than the Seagate Momentus 5400.3 - 100GB - 5400rpm SATA (120 GB vs 100 GB). The Seagate 120GB 2.5" SATA II has 1,800 RPM more HDD speed than the Seagate Momentus 5400.3 - 100GB - 5400rpm SATA (7200 RPM vs 5400 RPM). The Seagate Momentus 5400.3 - 100GB - 5400rpm SATA has 1.43 ms more average latency than the Seagate 120GB 2.5" SATA II (5.6 ms vs 4.17 ms). Interface: Serial ATA II on the Seagate 120GB 2.5" SATA II, Serial ATA on the Seagate Momentus 5400.3 - 100GB - 5400rpm SATA.

HDD capacity
- 120GB 2.5" SATA II:120 GB
- Momentus 5400.3 - 100GB - 5400rpm SATA:100 GB
HDD speed
- 120GB 2.5" SATA II:7200 RPM
- Momentus 5400.3 - 100GB - 5400rpm SATA:5400 RPM
Interface
- 120GB 2.5" SATA II:Serial ATA II
- Momentus 5400.3 - 100GB - 5400rpm SATA:Serial ATA
Average latency
- 120GB 2.5" SATA II:4.17 ms
- Momentus 5400.3 - 100GB - 5400rpm SATA:5.6 ms
Start-up current
- 120GB 2.5" SATA II:1.1 A
- Momentus 5400.3 - 100GB - 5400rpm SATA:1 A
Width
- 120GB 2.5" SATA II:69.8 mm
- Momentus 5400.3 - 100GB - 5400rpm SATA:70 mm
Depth
- 120GB 2.5" SATA II:100.5 mm
- Momentus 5400.3 - 100GB - 5400rpm SATA:100 mm
Weight
- 120GB 2.5" SATA II:115 g
- Momentus 5400.3 - 100GB - 5400rpm SATA:100 g

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" SATA II, Momentus 5400.3 - 100GB - 5400rpm SATA
34 specifications	A Seagate 120GB 2.5" SATA II View product	B Seagate Momentus 5400.3 - 100GB - 5400rpm SATA View product
Features4 differ
HDD capacityDiffers	120 GB	100 GB
HDD speedDiffers	7200 RPM	5400 RPM
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
Storage drive buffer sizeKnown for one	8 MB	Unknown — not stated by the source
HDD number of headsKnown for one	3	Unknown — not stated by the source
Average latencyDiffers	4.17 ms	5.6 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Read seek timeKnown for one	Unknown — not stated by the source	11 ms
Write seek timeKnown for one	Unknown — not stated by the source	13 ms
Power1 differ
Power consumption (standby)Known for one	0.8 W	Unknown — not stated by the source
Power consumption (idle)Known for one	0.25 W	Unknown — not stated by the source
Power consumption (read)Known for one	2.1 W	Unknown — not stated by the source
Power consumption (write)Known for one	2.1 W	Unknown — not stated by the source
Operating voltageKnown for one	5 V	Unknown — not stated by the source
Start-up currentDiffers	1.1 A	1 A
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	300 G	Unknown — not stated by the source
Non-operating shockKnown for one	900 G	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	69.8 mm	70 mm
DepthDiffers	100.5 mm	100 mm
WeightDiffers	115 g	100 g
Other featuresidentical
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Linux operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Sustained data rateKnown for one	59 MB/s	Unknown — not stated by the source
InternalKnown for one	Unknown — not stated by the source	Yes

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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