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Product comparison · 2 internal hard drives

Seagate 500GB SATA II HDD, 20Pk vs Seagate 750GB Ultra-ATA/100 HDD,20Pk

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  • 28specifications compared
  • 3differ
  • 25identical
  • 0known for one product only

Key differences

The Seagate 750GB Ultra-ATA/100 HDD,20Pk has 250 GB more HDD capacity than the Seagate 500GB SATA II HDD, 20Pk (750 GB vs 500 GB). The Seagate 750GB Ultra-ATA/100 HDD,20Pk has 85 g more weight than the Seagate 500GB SATA II HDD, 20Pk (720 g vs 635 g). Interface: Serial ATA II on the Seagate 500GB SATA II HDD, 20Pk, Ultra-ATA/100 on the Seagate 750GB Ultra-ATA/100 HDD,20Pk.

  • HDD capacity
    • 500 GB
    • 750 GB
  • Interface
    • Serial ATA II
    • Ultra-ATA/100
  • Weight
    • 635 g
    • 720 g

Side by side

Differences highlightedShow differences only
28 specifications
A

Seagate

500GB SATA II HDD, 20PkView product
B

Seagate

750GB Ultra-ATA/100 HDD,20PkView product
Features2 differ
HDD capacityDiffers500 GB750 GB
HDD speed7200 RPM7200 RPM
HDD size3.5"3.5"
InterfaceDiffersSerial ATA IIUltra-ATA/100
Component forSurveillance systemSurveillance system
Storage drive buffer size16 MB16 MB
Read seek time17 ms17 ms
Write seek time14 ms14 ms
Track to track seek time1 ms1 ms
Bytes per sector512512
Start/stop cycles5000050000
Poweridentical
Operating voltage5 / 12 V5 / 12 V
Operational conditionsidentical
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 shock63 G63 G
Non-operating shock300 G300 G
Weight & dimensions1 differ
Width101.6 mm101.6 mm
Depth147 mm147 mm
Height26.1 mm26.1 mm
WeightDiffers635 g720 g
Other featuresidentical
Power requirements+5V; +12V+5V; +12V
Data transfer rate3 Gbit/s3 Gbit/s
Drive ready time9 s9 s
InternalYesYes
Drive devices burst data transfer rate (PIO)0-40-4
Drive devices burst data transfer rate (Ultra DMA)0-60-6

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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