Product comparison · 2 internal hard drives

Seagate ST930818AM 30GB vs Seagate EE25 Series ST940813SM internal hard drive

13specifications compared
7differ
6identical
22known for one product only

Key differences

The Seagate EE25 Series ST940813SM internal hard drive has 10 GB more HDD capacity than the Seagate ST930818AM 30GB (40 GB vs 30 GB). The Seagate ST930818AM 30GB has 0.5 ms more read seek time than the Seagate EE25 Series ST940813SM internal hard drive (13 ms vs 12.5 ms). The Seagate EE25 Series ST940813SM internal hard drive has 0.5 ms more write seek time than the Seagate ST930818AM 30GB (14.5 ms vs 14 ms). Interface: IDE/ATA on the Seagate ST930818AM 30GB, Serial ATA on the Seagate EE25 Series ST940813SM internal hard drive. Operating temperature (T-T): -20 - 75 °C on the Seagate ST930818AM 30GB, -30 - 85 °C on the Seagate EE25 Series ST940813SM internal hard drive.

HDD capacity
- ST930818AM 30GB:30 GB
- EE25 Series ST940813SM internal hard drive:40 GB
Interface
- ST930818AM 30GB:IDE/ATA
- EE25 Series ST940813SM internal hard drive:Serial ATA
Read seek time
- ST930818AM 30GB:13 ms
- EE25 Series ST940813SM internal hard drive:12.5 ms
Write seek time
- ST930818AM 30GB:14 ms
- EE25 Series ST940813SM internal hard drive:14.5 ms
Mean time between failures (MTBF)
- ST930818AM 30GB:1000000 h
- EE25 Series ST940813SM internal hard drive:550000 h
Operating temperature (T-T)
- ST930818AM 30GB:-20 - 75 °C
- EE25 Series ST940813SM internal hard drive:-30 - 85 °C
Weight
- ST930818AM 30GB:102 g
- EE25 Series ST940813SM internal hard drive:100 g

Side by side

Differences highlightedShow differences only

Comparison of ST930818AM 30GB, ST940813SM
35 specifications	A Seagate ST930818AM 30GB View product	B Seagate EE25 Series ST940813SM internal hard drive Model ST940813SM View product
Features5 differ
HDD capacityDiffers	30 GB	40 GB
InterfaceDiffers	IDE/ATA	Serial ATA
HDD number of cylindersKnown for one	16383	Unknown — not stated by the source
HDD number of headsKnown for one	1	Unknown — not stated by the source
Read seek timeDiffers	13 ms	12.5 ms
Write seek timeDiffers	14 ms	14.5 ms
Full stroke seek timeKnown for one	23 ms	Unknown — not stated by the source
Track to track seek timeKnown for one	1 ms	Unknown — not stated by the source
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	1000000 h	550000 h
Poweridentical
Power consumption (standby)Known for one	Unknown — not stated by the source	0.26 W
Operational conditions1 differ
Operating temperature (T-T)Differs	-20 - 75 °C	-30 - 85 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 95 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating altitudeKnown for one	Unknown — not stated by the source	-304.8 - 4419 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-304.8 - 12192 m
Operating shockKnown for one	Unknown — not stated by the source	200 G
Non-operating shockKnown for one	Unknown — not stated by the source	800 G
Weight & dimensions1 differ
WidthKnown for one	69.8 mm	Unknown — not stated by the source
DepthKnown for one	100.2 mm	Unknown — not stated by the source
HeightKnown for one	9.5 mm	Unknown — not stated by the source
WeightDiffers	102 g	100 g
Other featuresidentical
HDD transfer rateKnown for one	100 Mbit/s	Unknown — not stated by the source
Power requirementsKnown for one	5V ± 5%	Unknown — not stated by the source
Recording densityKnown for one	840 kbit/inch	Unknown — not stated by the source
Track densityKnown for one	150k tracks/inch	Unknown — not stated by the source
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	69.85 x 100.2 x 9.5 mm
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	2.3 dB

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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