Product comparison · 2 internal hard drives

Samsung 120GB Serial ATA Hard Drive vs Seagate 400GB HDD

23specifications compared
12differ
11identical
16known for one product only

Key differences

The Seagate 400GB HDD has 320 GB more HDD capacity than the Samsung 120GB Serial ATA Hard Drive (400 GB vs 80 GB). The Samsung 120GB Serial ATA Hard Drive has 0.9 ms more average seek time than the Seagate 400GB HDD (8.9 ms vs 8 ms). The Samsung 120GB Serial ATA Hard Drive has 0.01 ms more average latency than the Seagate 400GB HDD (4.17 ms vs 4.16 ms). Interface: Serial ATA on the Samsung 120GB Serial ATA Hard Drive, Ultra-ATA/100 on the Seagate 400GB HDD. Operating temperature (T-T): 5 - 55 °C on the Samsung 120GB Serial ATA Hard Drive, 0 - 60 °C on the Seagate 400GB HDD.

HDD capacity
- 120GB Serial ATA Hard Drive:80 GB
- 400GB HDD:400 GB
Interface
- 120GB Serial ATA Hard Drive:Serial ATA
- 400GB HDD:Ultra-ATA/100
Average seek time
- 120GB Serial ATA Hard Drive:8.9 ms
- 400GB HDD:8 ms
Average latency
- 120GB Serial ATA Hard Drive:4.17 ms
- 400GB HDD:4.16 ms
Power consumption (standby)
- 120GB Serial ATA Hard Drive:0.9 W
- 400GB HDD:0.8 W
Operating temperature (T-T)
- 120GB Serial ATA Hard Drive:5 - 55 °C
- 400GB HDD:0 - 60 °C
Operating altitude
- 120GB Serial ATA Hard Drive:-305 - 3050 m
- 400GB HDD:-60.96 - 3048 m
Non-operating altitude
- 120GB Serial ATA Hard Drive:-305 - 12200 m
- 400GB HDD:-60.96 - 12192 m

Side by side

Differences highlightedShow differences only

Comparison of 120GB Serial ATA Hard Drive, 400GB HDD
39 specifications	A Samsung 120GB Serial ATA Hard Drive View product	B Seagate 400GB HDD View product
Features4 differ
HDD capacityDiffers	80 GB	400 GB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	Serial ATA	Ultra-ATA/100
Storage drive buffer size	8 MB	8 MB
Full stroke seek timeKnown for one	18 ms	Unknown — not stated by the source
Track to track seek timeKnown for one	0.8 ms	Unknown — not stated by the source
Average seek timeDiffers	8.9 ms	8 ms
Average latencyDiffers	4.17 ms	4.16 ms
Bytes per sector	512	512
Start/stop cycles	50000	50000
Mean time between failures (MTBF)Known for one	500000 h	Unknown — not stated by the source
TypeKnown for one	Unknown — not stated by the source	HDD
Power1 differ
Power consumption (standby)Differs	0.9 W	0.8 W
Operating voltage	5 / 12 V	5 / 12 V
Power consumption (typical)Known for one	Unknown — not stated by the source	12.4 W
Power consumption (idle)Known for one	Unknown — not stated by the source	7.2 W
Power consumption (read)Known for one	Unknown — not stated by the source	12.8 W
Power consumption (write)Known for one	Unknown — not stated by the source	12.8 W
Start-up currentKnown for one	Unknown — not stated by the source	2.8 A
Operational conditions4 differ
Operating temperature (T-T)Differs	5 - 55 °C	0 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Operating altitudeDiffers	-305 - 3050 m	-60.96 - 3048 m
Non-operating altitudeDiffers	-305 - 12200 m	-60.96 - 12192 m
Operating shock	63 G	63 G
Non-operating shockDiffers	350 G	300 G
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	5 G
Weight & dimensions3 differ
WidthDiffers	101.6 mm	101.8 mm
DepthDiffers	146.1 mm	147 mm
HeightDiffers	25.4 mm	26.1 mm
Weight	635 g	635 g
Other featuresidentical
Power requirementsKnown for one	5V°±5% / 12V°±10%	Unknown — not stated by the source
Drive device, transfer rateKnown for one	150 MB/s	Unknown — not stated by the source
Drive ready timeKnown for one	7 s	Unknown — not stated by the source
InternalKnown for one	Yes	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	27 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.

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