Product comparison · 2 internal hard drives

Samsung 20GB HDD vs Samsung 30GB Ultra-ATA/66 HDD

Key differences

HDD capacity
- 20GB HDD:20 GB
- 30GB Ultra-ATA/66 HDD:30 GB
Operating relative humidity (H-H)
- 20GB HDD:5 - 90%
- 30GB Ultra-ATA/66 HDD:8 - 90%
Storage relative humidity (H-H)
- 20GB HDD:5 - 95%
- 30GB Ultra-ATA/66 HDD:8 - 95%

Differences highlightedShow differences only

Comparison of 20GB HDD, 30GB Ultra-ATA/66 HDD
29 specifications	A Samsung 20GB HDD View product	B Samsung 30GB Ultra-ATA/66 HDD View product
Features1 differ
HDD capacityDiffers	20 GB	30 GB
HDD speed	4200 RPM	4200 RPM
HDD size	1.8"	1.8"
Interface	Ultra-ATA/66	Ultra-ATA/66
Storage drive buffer size	2 MB	2 MB
Full stroke seek time	26 ms	26 ms
Track to track seek time	3 ms	3 ms
Average seek timeKnown for one	Unknown — not stated by the source	15 ms
Average latency	7.14 ms	7.14 ms
Bytes per sector	512	512
Start/stop cycles	600000	600000
TypeKnown for one	HDD	Unknown — not stated by the source
Poweridentical
Power consumption (typical)	0.65 W	0.65 W
Power consumption (standby)	0.3 W	0.3 W
Operating voltage	3.3 V	3.3 V
Operational conditions2 differ
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Storage temperature (T-T)	-20 - 85 °C	-20 - 85 °C
Operating relative humidity (H-H)Differs	5 - 90%	8 - 90%
Storage relative humidity (H-H)Differs	5 - 95%	8 - 95%
Operating altitude	-300 - 3000 m	-300 - 3000 m
Non-operating altitude	-400 - 15000 m	-400 - 15000 m
Weight & dimensionsidentical
Width	54 mm	54 mm
Depth	71 mm	71 mm
Height	5 mm	5 mm
Weight	48 g	48 g
Other featuresidentical
Power requirementsKnown for one	Unknown — not stated by the source	+3.3V
Disks included quantityKnown for one	Unknown — not stated by the source	1 pc(s)
InternalKnown for one	Unknown — not stated by the source	Yes
Drive ready timeKnown for one	2 s	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.