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Product comparison · 2 internal hard drives

Samsung 120GB HDD vs Samsung 400GB Serial ATA II HDD, Retail

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  • 21specifications compared
  • 17differ
  • 4identical
  • 10known for one product only

Key differences

  • HDD capacity
    • 120 GB
    • 400 GB
  • HDD speed
    • 5400 RPM
    • 7200 RPM
  • HDD size
    • 2.5"
    • 3.5"
  • Interface
    • Serial ATA
    • Serial ATA II
  • Storage drive buffer size
    • 8 MB
    • 16 MB
  • Full stroke seek time
    • 22 ms
    • 18 ms
  • Track to track seek time
    • 2 ms
    • 0.8 ms
  • Average seek time
    • 12 ms
    • 8.9 ms

Side by side

Differences highlightedShow differences only
31 specifications
A

Samsung

120GB HDDView product
B

Samsung

400GB Serial ATA II HDD, RetailView product
Features10 differ
HDD capacityDiffers120 GB400 GB
HDD speedDiffers5400 RPM7200 RPM
HDD sizeDiffers2.5"3.5"
InterfaceDiffersSerial ATASerial ATA II
Storage drive buffer sizeDiffers8 MB16 MB
Full stroke seek timeDiffers22 ms18 ms
Track to track seek timeDiffers2 ms0.8 ms
Average seek timeDiffers12 ms8.9 ms
Average latencyDiffers5.6 ms4.17 ms
Mean time between failures (MTBF)Differs330000 h600000 h
TypeKnown for oneHDD
Power3 differ
Power consumption (typical)Differs4.5 W10 W
Power consumption (standby)Differs0.25 W1.3 W
Operating voltageDiffers5 V5 / 12 V
Power consumption (PowerSave)Known for one0.25 W
Operational conditions3 differ
Operating temperature (T-T)Differs5 - 55 °C0 - 60 °C
Operating altitudeKnown for one0 - 3000 m
Non-operating altitudeKnown for one0 - 12000 m
Operating shockDiffers325 G63 G
Non-operating shockDiffers1000 G300 G
Weight & dimensionsidentical
WidthKnown for one147 mm
DepthKnown for one101.6 mm
HeightKnown for one26.1 mm
Other features1 differ
HDD transfer rateKnown for one1000 Mbit/s
Power requirementsKnown for one+5V±5%;+12V±10%
Drive ready timeDiffers4 s10 s
InternalKnown for oneYes

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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