Seagate ST930818AM 30GB vs Seagate ST930818SM 30GB

Comparison of ST930818AM 30GB, ST930818SM 30GB

26 specifications	A Seagate ST930818AM 30GBView product	B Seagate ST930818SM 30GBView product
Features1 differ
HDD capacity	30 GB	30 GB
HDD speed	5400 RPM	5400 RPM
HDD size	2.5"	2.5"
InterfaceDiffers	IDE/ATA	Serial ATA
Storage drive buffer size	8 MB	8 MB
HDD number of cylinders	16383	16383
HDD number of heads	1	1
Read seek time	13 ms	13 ms
Write seek time	14 ms	14 ms
Full stroke seek time	23 ms	23 ms
Track to track seek time	1 ms	1 ms
Average latency	5.6 ms	5.6 ms
Bytes per sector	512	512
Mean time between failures (MTBF)	1000000 h	1000000 h
Poweridentical
Operating voltage	5 V	5 V
Operational conditionsidentical
Operating temperature (T-T)	-20 - 75 °C	-20 - 75 °C
Weight & dimensions1 differ
Width	69.8 mm	69.8 mm
DepthDiffers	100.2 mm	100.5 mm
Height	9.5 mm	9.5 mm
Weight	102 g	102 g
Other featuresidentical
HDD transfer rateKnown for one	100 Mbit/s	—Unknown — not stated by the source
Power requirements	5V ± 5%	5V ± 5%
Internal	Yes	Yes
Recording density	840 kbit/inch	840 kbit/inch
Track density	150k tracks/inch	150k tracks/inch
Data transfer rateKnown for one	—Unknown — not stated by the source	3 Gbit/s

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.