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Product comparison · 2 internal hard drives

Seagate 20GB LD25 vs Seagate Constellation 7200 SATA II 500GB

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  • 15specifications compared
  • 14differ
  • 1identical
  • 15known for one product only

Key differences

  • HDD capacity
    • 20 GB
    • 500 GB
  • HDD speed
    • 5400 RPM
    • 7200 RPM
  • HDD size
    • 2.5"
    • 3.5"
  • Interface
    • Ultra-ATA/100
    • Serial ATA II
  • Storage drive buffer size
    • 2 MB
    • 32 MB
  • Read seek time
    • 16 ms
    • 8.5 ms
  • Write seek time
    • 16 ms
    • 9.5 ms
  • Average latency
    • 5.6 ms
    • 4.16 ms

Side by side

Differences highlightedShow differences only
30 specifications
A

Seagate

20GB LD25View product
B

Seagate

Constellation 7200 SATA II 500GBView product
Features8 differ
HDD capacityDiffers20 GB500 GB
HDD speedDiffers5400 RPM7200 RPM
HDD sizeDiffers2.5"3.5"
InterfaceDiffersUltra-ATA/100Serial ATA II
Storage drive buffer sizeDiffers2 MB32 MB
Read seek timeDiffers16 ms8.5 ms
Write seek timeDiffers16 ms9.5 ms
Average latencyDiffers5.6 ms4.16 ms
Mean time between failures (MTBF)Known for one1200000 h
Power1 differ
Operating voltageDiffers5 V5 / 12 V
Start-up currentKnown for one1 A
Operational conditions1 differ
Operating temperature (T-T)Known for one5 - 55 °C
Storage temperature (T-T)Known for one-40 - 70 °C
Operating shockDiffers100 G80 G
Non-operating shockKnown for one500 G
Weight & dimensions4 differ
WidthDiffers69.8 mm101.6 mm
DepthDiffers100.5 mm147 mm
HeightDiffers9.5 mm26.1 mm
WeightDiffers100 g610 g
Other featuresidentical
Ethernet LANKnown for oneNo
Fibre ChannelKnown for oneNo
FireWire 400Known for oneNo
FireWire 800Known for oneNo
USB 2.0 ports quantityKnown for one0
USB 3.2 Gen 1 (3.1 Gen 1) ports quantityKnown for one0
USB poweredKnown for oneNo
Dimensions (W x D x H) (imperial)Known for one69.8 x 100.5 x 9.5 mm (2.75 x 3.96 x 0.374")
Weight (imperial)Known for one0.0998 kg (0.22 lbs)
Acoustic pressure emissionsKnown for one1.9 dB

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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