Product comparison · 2 internal hard drives

Samsung 400GB HDD vs Samsung Spinpoint M HM120JC internal hard drive

16specifications compared
13differ
3identical
20known for one product only

Key differences

The Samsung 400GB HDD has 280 GB more HDD capacity than the Samsung Spinpoint M HM120JC internal hard drive (400 GB vs 120 GB). The Samsung 400GB HDD has 1,800 RPM more HDD speed than the Samsung Spinpoint M HM120JC internal hard drive (7200 RPM vs 5400 RPM). The Samsung 400GB HDD has 1" more HDD size than the Samsung Spinpoint M HM120JC internal hard drive (3.5" vs 2.5"). Operating voltage: 5 / 12 V on the Samsung 400GB HDD, 5 V on the Samsung Spinpoint M HM120JC internal hard drive.

HDD capacity
- 400GB HDD:400 GB
- Spinpoint M HM120JC internal hard drive:120 GB
HDD speed
- 400GB HDD:7200 RPM
- Spinpoint M HM120JC internal hard drive:5400 RPM
HDD size
- 400GB HDD:3.5"
- Spinpoint M HM120JC internal hard drive:2.5"
Track to track seek time
- 400GB HDD:0.8 ms
- Spinpoint M HM120JC internal hard drive:2 ms
Average seek time
- 400GB HDD:8.9 ms
- Spinpoint M HM120JC internal hard drive:12 ms
Average latency
- 400GB HDD:4.17 ms
- Spinpoint M HM120JC internal hard drive:5.6 ms
Start/stop cycles
- 400GB HDD:50000
- Spinpoint M HM120JC internal hard drive:600000
Mean time between failures (MTBF)
- 400GB HDD:600000 h
- Spinpoint M HM120JC internal hard drive:330000 h

Side by side

Differences highlightedShow differences only

Comparison of 400GB HDD, HM120JC
36 specifications	A Samsung 400GB HDD View product	B Samsung Spinpoint M HM120JC internal hard drive Model HM120JC View product
Features8 differ
HDD capacityDiffers	400 GB	120 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	Ultra-ATA/100	Ultra-ATA/100
TypeKnown for one	HDD	Unknown — not stated by the source
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 timeDiffers	0.8 ms	2 ms
Average seek timeDiffers	8.9 ms	12 ms
Average latencyDiffers	4.17 ms	5.6 ms
Bytes per sector	512	512
Start/stop cyclesDiffers	50000	600000
Mean time between failures (MTBF)Differs	600000 h	330000 h
Power1 differ
Power consumption (typical)Known for one	8.7 W	Unknown — not stated by the source
Power consumption (standby)Known for one	0.6 W	Unknown — not stated by the source
Power consumption (PowerSave)Known for one	0.6 W	Unknown — not stated by the source
Power consumption (idle)Known for one	7.2 W	Unknown — not stated by the source
Operating voltageDiffers	5 / 12 V	5 V
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 vibrationKnown for one	1 G	Unknown — not stated by the source
Non-operating vibrationKnown for one	2 G	Unknown — not stated by the source
Operating altitudeKnown for one	-304.8 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-304.8 - 12192 m	Unknown — not stated by the source
Operating shockKnown for one	63 G	Unknown — not stated by the source
Non-operating shockKnown for one	300 G	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	101.6 mm	100 mm
DepthDiffers	146.1 mm	70 mm
HeightDiffers	25.4 mm	9.4 mm
WeightDiffers	653 g	100 g
Other featuresidentical
Drive ready timeKnown for one	10 s	Unknown — not stated by the source
HDD transfer rateKnown for one	Unknown — not stated by the source	431 Mbit/s
Drive device, transfer rateKnown for one	Unknown — not stated by the source	100 MB/s
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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