Product comparison · 2 internal hard drives

Samsung 400GB Serial ATA II HDD vs Samsung 40GB SATA Hard Drive

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

Key differences

HDD capacity
- 400GB Serial ATA II HDD:400 GB
- 40GB SATA Hard Drive:40 GB
HDD speed
- 400GB Serial ATA II HDD:7200 RPM
- 40GB SATA Hard Drive:5400 RPM
HDD size
- 400GB Serial ATA II HDD:3.5"
- 40GB SATA Hard Drive:2.5"
Interface
- 400GB Serial ATA II HDD:Serial ATA II
- 40GB SATA Hard Drive:Serial ATA
Storage drive buffer size
- 400GB Serial ATA II HDD:16 MB
- 40GB SATA Hard Drive:8 MB
Full stroke seek time
- 400GB Serial ATA II HDD:18 ms
- 40GB SATA Hard Drive:22 ms
Track to track seek time
- 400GB Serial ATA II HDD:0.8 ms
- 40GB SATA Hard Drive:2 ms
Average seek time
- 400GB Serial ATA II HDD:8.9 ms
- 40GB SATA Hard Drive:12 ms

Side by side

Differences highlightedShow differences only

Comparison of 400GB Serial ATA II HDD, 40GB SATA Hard Drive
32 specifications	A Samsung 400GB Serial ATA II HDD View product	B Samsung 40GB SATA Hard Drive View product
Features10 differ
HDD capacityDiffers	400 GB	40 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer sizeDiffers	16 MB	8 MB
Full stroke seek timeDiffers	18 ms	22 ms
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
Mean time between failures (MTBF)Differs	600000 h	330000 h
Start/stop cyclesKnown for one	Unknown — not stated by the source	600000
Power1 differ
Power consumption (typical)Known for one	10 W	Unknown — not stated by the source
Power consumption (standby)Known for one	1.3 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 altitudeKnown for one	0 - 3000 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	0 - 12000 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
Other features2 differ
HDD transfer rateDiffers	1000 Mbit/s	428 Mbit/s
Power requirementsKnown for one	+5V±5%;+12V±10%	Unknown — not stated by the source
Drive ready timeDiffers	10 s	4 s
Drive device, transfer rateKnown for one	Unknown — not stated by the source	150 MB/s
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	100 mm
DepthKnown for one	Unknown — not stated by the source	70 mm
HeightKnown for one	Unknown — not stated by the source	9.4 mm
WeightKnown for one	Unknown — not stated by the source	100 g

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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