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Product comparison · 2 internal hard drives

Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk vs Seagate ST930818AM 30GB

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  • 19specifications compared
  • 17differ
  • 2identical
  • 12known for one product only

Key differences

The Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk has 720 GB more HDD capacity than the Seagate ST930818AM 30GB (750 GB vs 30 GB). The Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk has 1,800 RPM more HDD speed than the Seagate ST930818AM 30GB (7200 RPM vs 5400 RPM). The Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk has 1" more HDD size than the Seagate ST930818AM 30GB (3.5" vs 2.5"). Interface: Serial ATA on the Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk, IDE/ATA on the Seagate ST930818AM 30GB. Operating voltage: 5 / 12 V on the Seagate Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pk, 5 V on the Seagate ST930818AM 30GB.

  • HDD capacity
    • 750 GB
    • 30 GB
  • HDD speed
    • 7200 RPM
    • 5400 RPM
  • HDD size
    • 3.5"
    • 2.5"
  • Interface
    • Serial ATA
    • IDE/ATA
  • Storage drive buffer size
    • 32 MB
    • 8 MB
  • Read seek time
    • 8.5 ms
    • 13 ms
  • Write seek time
    • 9.5 ms
    • 14 ms
  • Track to track seek time
    • 0.8 ms
    • 1 ms

Side by side

Differences highlightedShow differences only
31 specifications
A

Seagate

Barracuda ES.2 SATA 3.0-Gb/s 750-GB HD 20pkView product
B

Seagate

ST930818AM 30GBView product
Features10 differ
HDD capacityDiffers750 GB30 GB
HDD speedDiffers7200 RPM5400 RPM
HDD sizeDiffers3.5"2.5"
InterfaceDiffersSerial ATAIDE/ATA
Storage drive buffer sizeDiffers32 MB8 MB
Read seek timeDiffers8.5 ms13 ms
Write seek timeDiffers9.5 ms14 ms
Track to track seek timeDiffers0.8 ms1 ms
Average latencyDiffers4.16 ms5.6 ms
Bytes per sector512512
Mean time between failures (MTBF)Differs1200000 h1000000 h
HDD number of cylindersKnown for one16383
HDD number of headsKnown for one1
Full stroke seek timeKnown for one23 ms
Power1 differ
Operating voltageDiffers5 / 12 V5 V
Operational conditions1 differ
Operating temperature (T-T)Differs5 - 55 °C-20 - 75 °C
Storage temperature (T-T)Known for one-40 - 70 °C
Operating shockKnown for one63 G
Non-operating shockKnown for one300 G
Weight & dimensions4 differ
WidthDiffers101.6 mm69.8 mm
DepthDiffers147 mm100.2 mm
HeightDiffers26.1 mm9.5 mm
WeightDiffers530 g102 g
Other features1 differ
HDD transfer rateDiffers1287 Mbit/s100 Mbit/s
Data transfer rateKnown for one3 Gbit/s
InternalYesYes
USB poweredKnown for oneNo
Sustained data rateKnown for one105 MB/s
Power requirementsKnown for one5V ± 5%
Recording densityKnown for one840 kbit/inch
Track densityKnown for one150k tracks/inch

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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