Product comparison · 2 internal hard drives

Seagate 120GB 2.5" SATA vs Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS)

15specifications compared
2differ
13identical
17known for one product only

Key differences

The Seagate 120GB 2.5" SATA has 20 GB more HDD capacity than the Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS) (120 GB vs 100 GB). The Seagate 120GB 2.5" SATA has 0.04 ms more average latency than the Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS) (5.6 ms vs 5.56 ms).

HDD capacity
- 120GB 2.5" SATA:120 GB
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):100 GB
Average latency
- 120GB 2.5" SATA:5.6 ms
- Momentus 5400.2 100GB 8MB SATA (ST9100824AS):5.56 ms

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" SATA, Momentus 5400.2 100GB 8MB SATA (ST9100824AS)
32 specifications	A Seagate 120GB 2.5" SATA View product	B Seagate Momentus 5400.2 100GB 8MB SATA (ST9100824AS)View product
Features2 differ
HDD capacityDiffers	120 GB	100 GB
HDD speed	5400 RPM	5400 RPM
HDD sizeKnown for one	2.5"	Unknown — not stated by the source
Interface	Serial ATA	Serial ATA
TypeKnown for one	HDD	Unknown — not stated by the source
Component for	Laptop	Laptop
Storage drive buffer size	8 MB	8 MB
HDD number of headsKnown for one	4	Unknown — not stated by the source
Average seek time	12.5 ms	12.5 ms
Average latencyDiffers	5.6 ms	5.56 ms
Bytes per sector	512	512
Start/stop cyclesKnown for one	600000	Unknown — not stated by the source
Poweridentical
Power consumption (standby)Known for one	0.28 W	Unknown — not stated by the source
Power consumption (idle)Known for one	0.8 W	Unknown — not stated by the source
Power consumption (read)Known for one	1.9 W	Unknown — not stated by the source
Power consumption (write)Known for one	2.3 W	Unknown — not stated by the source
Operating voltageKnown for one	5 V	Unknown — not stated by the source
Start-up currentKnown for one	1.1 A	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	5 - 55 °C	5 - 55 °C
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating shockKnown for one	250 G	Unknown — not stated by the source
Non-operating shockKnown for one	900 G	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	69.8 mm	Unknown — not stated by the source
DepthKnown for one	100.5 mm	Unknown — not stated by the source
HeightKnown for one	9.5 mm	Unknown — not stated by the source
Weight	100 g	100 g
Other featuresidentical
HDD transfer rate	150 Mbit/s	150 Mbit/s
Power requirements	2.2 W	2.2 W
Dimensions (WxDxH)	69.85 x 100.2 x 9.5 mm	69.85 x 100.2 x 9.5 mm
Internal	Yes	Yes
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Acoustic pressure emissions	24 dB	24 dB

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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