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Product comparison · 2 internal hard drives

Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive vs Seagate EE25.1 20 GB Ultra ATA/100 25pk

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  • 10specifications compared
  • 8differ
  • 2identical
  • 21known for one product only

Key differences

The Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive has 230 GB more HDD capacity than the Seagate EE25.1 20 GB Ultra ATA/100 25pk (250 GB vs 20 GB). The Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive has 2 more HDD heads than the Seagate EE25.1 20 GB Ultra ATA/100 25pk (4 vs 2). The Seagate EE25.1 20 GB Ultra ATA/100 25pk has 1.5 ms more read seek time than the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive (12.5 ms vs 11 ms). Interface: Serial ATA on the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive, Ultra-ATA/100 on the Seagate EE25.1 20 GB Ultra ATA/100 25pk.

  • HDD capacity
    • 250 GB
    • 20 GB
  • Interface
    • Serial ATA
    • Ultra-ATA/100
  • HDD number of heads
    • 4
    • 2
  • Read seek time
    • 11 ms
    • 12.5 ms
  • Write seek time
    • 13 ms
    • 14.5 ms
  • Non-operating shock
    • 350 G
    • 800 G
  • Weight
    • 102 g
    • 100 g

Side by side

Differences highlightedShow differences only
31 specifications
A

Lenovo

ThinkPad 250GB 5400rpm Serial ATA Hard driveView product
B

Seagate

EE25.1 20 GB Ultra ATA/100 25pkView product
Features5 differ
HDD capacityDiffers250 GB20 GB
HDD speed5400 RPM5400 RPM
HDD sizeKnown for one2.5"
InterfaceDiffersSerial ATAUltra-ATA/100
Storage drive buffer sizeKnown for one8 MB
HDD number of headsDiffers42
Read seek timeDiffers11 ms12.5 ms
Write seek timeDiffers13 ms14.5 ms
Average latencyKnown for one5.5 ms
Bytes per sectorKnown for one512
Poweridentical
Power consumption (standby)Known for one0.26 W
Operating voltageKnown for one5 V
Operational conditions1 differ
Operating temperature (T-T)Known for one-30 - 85 °C
Storage temperature (T-T)Known for one-40 - 95 °C
Operating relative humidity (H-H)Known for one5 - 90%
Storage relative humidity (H-H)Known for one5 - 95%
Non-operating shockDiffers350 G800 G
Operating shockKnown for one1000 G
Weight & dimensions1 differ
WidthKnown for one69.8 mm
DepthKnown for one100 mm
HeightKnown for one9.5 mm
WeightDiffers102 g100 g
Other features1 differ
Power requirementsKnown for one5V ± 5%
InternalYesYes
Compatible productsKnown for onePC
CertificationDiffersCE, UL, MIC, TUV, BSMI, C-Tick, CUL, RoHSFCC Class B
Dimensions (WxDxH)Known for one69.85 x 100.2 x 9.5 mm
Compatible operating systemsKnown for oneMicrosoft Windows 2000 Windows XP Windows Vista
Data transfer rateKnown for one1.5 Gbit/s
Mac compatibilityKnown for oneNo
Maximum data transfer rateKnown for one665 Mbit/s

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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