Product comparison · 2 internal hard drives

Seagate 120GB 2.5" SATA vs Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A)

16specifications compared
4differ
12identical
16known for one product only

Key differences

The Seagate 120GB 2.5" SATA has 1,200 RPM more HDD speed than the Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A) (5400 RPM vs 4200 RPM). The Seagate 120GB 2.5" SATA has 0.04 ms more average latency than the Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A) (5.6 ms vs 5.56 ms). The Seagate 120GB 2.5" SATA has 0.2 W more power requirements than the Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A) (2.2 W vs 2 W). Interface: Serial ATA on the Seagate 120GB 2.5" SATA, Ultra-ATA/100 on the Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A).

HDD speed
- 120GB 2.5" SATA:5400 RPM
- MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A):4200 RPM
Interface
- 120GB 2.5" SATA:Serial ATA
- MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A):Ultra-ATA/100
Average latency
- 120GB 2.5" SATA:5.6 ms
- MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A):5.56 ms
Power requirements
- 120GB 2.5" SATA:2.2 W
- MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A):2 W

Side by side

Differences highlightedShow differences only

Comparison of 120GB 2.5" SATA, MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A)
32 specifications	A Seagate 120GB 2.5" SATA View product	B Seagate MOMENTUS 4200.2 120GB 8MB ATA (ST9120824A)View product
Features3 differ
HDD capacity	120 GB	120 GB
HDD speedDiffers	5400 RPM	4200 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	Serial ATA	Ultra-ATA/100
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 voltage	5 V	5 V
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 features1 differ
HDD transfer rateKnown for one	150 Mbit/s	Unknown — not stated by the source
Power requirementsDiffers	2.2 W	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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