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Product comparison · 2 internal hard drives

Seagate 750GB 3.5" Ultra ATA/100 vs Seagate Barracuda 120GB Serial ATA II HDD

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  • 14specifications compared
  • 7differ
  • 7identical
  • 22known for one product only

Key differences

  • HDD capacity
    • 750 GB
    • 120 GB
  • Interface
    • Ultra-ATA/100
    • Serial ATA II
  • Storage drive buffer size
    • 16 MB
    • 2 MB
  • Operating shock
    • 68 G
    • 63 G
  • Non-operating shock
    • 300 G
    • 350 G
  • Height
    • 26.1 mm
    • 20 mm
  • Weight
    • 720 g
    • 380 g

Side by side

Differences highlightedShow differences only
36 specifications
A

Seagate

750GB 3.5" Ultra ATA/100View product
B

Seagate

Barracuda 120GB Serial ATA II HDDView product
Features3 differ
HDD capacityDiffers750 GB120 GB
HDD speed7200 RPM7200 RPM
HDD sizeKnown for one3.5"
InterfaceDiffersUltra-ATA/100Serial ATA II
TypeKnown for oneHDD
Storage drive buffer sizeDiffers16 MB2 MB
HDD number of headsKnown for one8
Average latency4.16 ms4.16 ms
Bytes per sector512512
Start/stop cyclesKnown for one50000
Mean time between failures (MTBF)Known for one700000 h
Poweridentical
Power consumption (idle)Known for one9.3 W
Power consumption (read)Known for one13 W
Power consumption (write)Known for one13 W
Operating voltageKnown for one5 / 12 V
Start-up currentKnown for one2.8 A
Power consumption (standby)Known for one1.5 W
Operational conditions2 differ
Operating temperature (T-T)0 - 60 °C0 - 60 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Operating relative humidity (H-H)Known for one5 - 90%
Storage relative humidity (H-H)Known for one5 - 95%
Operating altitudeKnown for one-60.96 - 3048 m
Non-operating altitudeKnown for one-60.96 - 12192 m
Operating shockDiffers68 G63 G
Non-operating shockDiffers300 G350 G
Weight & dimensions2 differ
Width101.6 mm101.6 mm
Depth147 mm147 mm
HeightDiffers26.1 mm20 mm
WeightDiffers720 g380 g
Other featuresidentical
Windows operating systems supportedKnown for oneYes
Linux operating systems supportedKnown for oneYes
Acoustic pressure emissionsKnown for one2.7 dB
Dimensions (WxDxH)Known for one101.6 x 146.99 x 19.99 mm
External power adapterKnown for oneNo
InternalKnown for oneYes
USB poweredKnown for oneNo

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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