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Product comparison · 2 internal hard drives

Samsung 250GB Serial ATA II HDD, 20-pk vs Seagate 5400.3 SATA 40GB

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  • 21specifications compared
  • 16differ
  • 5identical
  • 22known for one product only

Key differences

The Samsung 250GB Serial ATA II HDD, 20-pk has 210 GB more HDD capacity than the Seagate 5400.3 SATA 40GB (250 GB vs 40 GB). The Samsung 250GB Serial ATA II HDD, 20-pk has 1,800 RPM more HDD speed than the Seagate 5400.3 SATA 40GB (7200 RPM vs 5400 RPM). The Samsung 250GB Serial ATA II HDD, 20-pk has 1" more HDD size than the Seagate 5400.3 SATA 40GB (3.5" vs 2.5"). Interface: Serial ATA II on the Samsung 250GB Serial ATA II HDD, 20-pk, Serial ATA on the Seagate 5400.3 SATA 40GB. Operating voltage: 5 / 12 V on the Samsung 250GB Serial ATA II HDD, 20-pk, 5 V on the Seagate 5400.3 SATA 40GB.

  • HDD capacity
    • 250 GB
    • 40 GB
  • HDD speed
    • 7200 RPM
    • 5400 RPM
  • HDD size
    • 3.5"
    • 2.5"
  • Interface
    • Serial ATA II
    • Serial ATA
  • Full stroke seek time
    • 18 ms
    • 22 ms
  • Track to track seek time
    • 0.8 ms
    • 1.5 ms
  • Average latency
    • 4.17 ms
    • 5.6 ms
  • Start/stop cycles
    • 50000
    • 600000

Side by side

Differences highlightedShow differences only
43 specifications
A

Samsung

250GB Serial ATA II HDD, 20-pkView product
B

Seagate

5400.3 SATA 40GBView product
Features8 differ
HDD capacityDiffers250 GB40 GB
HDD speedDiffers7200 RPM5400 RPM
HDD sizeDiffers3.5"2.5"
InterfaceDiffersSerial ATA IISerial ATA
TypeKnown for oneHDD
Component forKnown for oneLaptop
Storage drive buffer size8 MB8 MB
HDD number of headsKnown for one1
Read seek timeKnown for one11 ms
Write seek timeKnown for one13 ms
Full stroke seek timeDiffers18 ms22 ms
Track to track seek timeDiffers0.8 ms1.5 ms
Average latencyDiffers4.17 ms5.6 ms
Bytes per sectorKnown for one512
Start/stop cyclesDiffers50000600000
Mean time between failures (MTBF)Known for one600000 h
Power1 differ
Power consumption (standby)Known for one0.2 W
Power consumption (PowerSave)Known for one0.2 W
Power consumption (idle)Known for one0.6 W
Power consumption (read)Known for one1.9 W
Power consumption (write)Known for one1.8 W
Operating voltageDiffers5 / 12 V5 V
Start-up currentKnown for one1 A
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)5 - 90%5 - 90%
Storage relative humidity (H-H)5 - 95%5 - 95%
Operating vibrationKnown for one1 G
Non-operating vibrationKnown for one5 G
Operating altitudeKnown for one-304.8 - 3048 m
Non-operating altitudeKnown for one-304.8 - 12192 m
Operating shockDiffers63 G350 G
Non-operating shockDiffers350 G900 G
Weight & dimensions4 differ
WidthDiffers146 mm69.8 mm
DepthDiffers101.6 mm100.5 mm
HeightDiffers25.4 mm9.5 mm
WeightDiffers463 g96 g
Packaging dataidentical
Quantity per packKnown for one1 pc(s)
Other features1 differ
Drive ready timeDiffers8 s3 s
Windows operating systems supportedKnown for oneYes
Power requirementsKnown for one+5V±5%, +12V±10%
Product colourKnown for oneBlack
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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