Product comparison · 2 internal hard drives

Samsung 40GB SATA Hard Drive vs Samsung 40GB Ultra-ATA/133 HDD, 20-PK

15specifications compared
12differ
3identical
17known for one product only

Key differences

The Samsung 40GB Ultra-ATA/133 HDD, 20-PK has 1,800 RPM more HDD speed than the Samsung 40GB SATA Hard Drive (7200 RPM vs 5400 RPM). The Samsung 40GB Ultra-ATA/133 HDD, 20-PK has 1" more HDD size than the Samsung 40GB SATA Hard Drive (3.5" vs 2.5"). The Samsung 40GB SATA Hard Drive has 6 MB more storage drive buffer size than the Samsung 40GB Ultra-ATA/133 HDD, 20-PK (8 MB vs 2 MB). Interface: Serial ATA on the Samsung 40GB SATA Hard Drive, Ultra-ATA/133 on the Samsung 40GB Ultra-ATA/133 HDD, 20-PK. Operating voltage: 5 V on the Samsung 40GB SATA Hard Drive, 5 / 12 V on the Samsung 40GB Ultra-ATA/133 HDD, 20-PK.

HDD speed
- 40GB SATA Hard Drive:5400 RPM
- 40GB Ultra-ATA/133 HDD, 20-PK:7200 RPM
HDD size
- 40GB SATA Hard Drive:2.5"
- 40GB Ultra-ATA/133 HDD, 20-PK:3.5"
Interface
- 40GB SATA Hard Drive:Serial ATA
- 40GB Ultra-ATA/133 HDD, 20-PK:Ultra-ATA/133
Storage drive buffer size
- 40GB SATA Hard Drive:8 MB
- 40GB Ultra-ATA/133 HDD, 20-PK:2 MB
Full stroke seek time
- 40GB SATA Hard Drive:22 ms
- 40GB Ultra-ATA/133 HDD, 20-PK:18 ms
Track to track seek time
- 40GB SATA Hard Drive:2 ms
- 40GB Ultra-ATA/133 HDD, 20-PK:0.8 ms
Average seek time
- 40GB SATA Hard Drive:12 ms
- 40GB Ultra-ATA/133 HDD, 20-PK:8.9 ms
Average latency
- 40GB SATA Hard Drive:5.6 ms
- 40GB Ultra-ATA/133 HDD, 20-PK:4.17 ms

Side by side

Differences highlightedShow differences only

Comparison of 40GB SATA Hard Drive, 40GB Ultra-ATA/133 HDD, 20-PK
32 specifications	A Samsung 40GB SATA Hard Drive View product	B Samsung 40GB Ultra-ATA/133 HDD, 20-PK View product
Features9 differ
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Serial ATA	Ultra-ATA/133
Storage drive buffer sizeDiffers	8 MB	2 MB
Full stroke seek timeDiffers	22 ms	18 ms
Track to track seek timeDiffers	2 ms	0.8 ms
Average seek timeDiffers	12 ms	8.9 ms
Average latencyDiffers	5.6 ms	4.17 ms
Mean time between failures (MTBF)Differs	330000 h	500000 h
Start/stop cyclesKnown for one	600000	Unknown — not stated by the source
Power1 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	7.1 W
Power consumption (standby)Known for one	Unknown — not stated by the source	0.5 W
Power consumption (PowerSave)Known for one	Unknown — not stated by the source	0.5 W
Operating voltageDiffers	5 V	5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	5 - 55 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Non-operating altitudeKnown for one	Unknown — not stated by the source	12000
Operating shockKnown for one	Unknown — not stated by the source	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	350 G
Other features2 differ
Power requirementsKnown for one	Unknown — not stated by the source	+5V / +12V
Drive device, transfer rateDiffers	150 MB/s	133 MB/s
Drive ready timeDiffers	4 s	7 s
HDD transfer rateKnown for one	428 Mbit/s	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	100 mm	Unknown — not stated by the source
DepthKnown for one	70 mm	Unknown — not stated by the source
HeightKnown for one	9.4 mm	Unknown — not stated by the source
WeightKnown for one	100 g	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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