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Product comparison · 2 internal hard drives

Seagate 20GB 3.5" Ultra ATA/100 vs Seagate 300GB 3.5" Ultra ATA/100

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  • 28specifications compared
  • 11differ
  • 17identical
  • 6known for one product only

Key differences

The Seagate 300GB 3.5" Ultra ATA/100 has 280 GB more HDD capacity than the Seagate 20GB 3.5" Ultra ATA/100 (300 GB vs 20 GB). The Seagate 300GB 3.5" Ultra ATA/100 has 1,800 RPM more HDD speed than the Seagate 20GB 3.5" Ultra ATA/100 (7200 RPM vs 5400 RPM). The Seagate 300GB 3.5" Ultra ATA/100 has 1.1 ms more read seek time than the Seagate 20GB 3.5" Ultra ATA/100 (11 ms vs 9.9 ms). Operating altitude: -198 - 304 m on the Seagate 20GB 3.5" Ultra ATA/100, -60.96 - 3048 m on the Seagate 300GB 3.5" Ultra ATA/100. Non-operating altitude: -198 - 12192 m on the Seagate 20GB 3.5" Ultra ATA/100, -60.96 - 12192 m on the Seagate 300GB 3.5" Ultra ATA/100.

  • HDD capacity
    • 20 GB
    • 300 GB
  • HDD speed
    • 5400 RPM
    • 7200 RPM
  • Read seek time
    • 9.9 ms
    • 11 ms
  • Write seek time
    • 10.9 ms
    • 12 ms
  • Average latency
    • 5.55 ms
    • 4.16 ms
  • Start-up current
    • 1.4 A
    • 2.6 A
  • Operating altitude
    • -198 - 304 m
    • -60.96 - 3048 m
  • Non-operating altitude
    • -198 - 12192 m
    • -60.96 - 12192 m

Side by side

Differences highlightedShow differences only
34 specifications
A

Seagate

20GB 3.5" Ultra ATA/100View product
B

Seagate

300GB 3.5" Ultra ATA/100View product
Features5 differ
HDD capacityDiffers20 GB300 GB
HDD speedDiffers5400 RPM7200 RPM
HDD size3.5"3.5"
InterfaceUltra-ATA/100Ultra-ATA/100
TypeHDDHDD
HDD number of cylinders1638316383
HDD number of heads1616
Read seek timeDiffers9.9 ms11 ms
Write seek timeDiffers10.9 ms12 ms
Average latencyDiffers5.55 ms4.16 ms
Bytes per sectorKnown for one512
Start/stop cycles5000050000
Mean time between failures (MTBF)Known for one500000 h
Storage drive buffer sizeKnown for one16 MB
Power1 differ
Power consumption (idle)Known for one4.8 W
Power consumption (read)Known for one7.1 W
Power consumption (write)Known for one7.1 W
Operating voltage5 / 12 V5 / 12 V
Start-up currentDiffers1.4 A2.6 A
Operational conditions3 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 altitudeDiffers-198 - 304 m-60.96 - 3048 m
Non-operating altitudeDiffers-198 - 12192 m-60.96 - 12192 m
Operating shock63 G63 G
Non-operating shockDiffers350 G300 G
Weight & dimensions2 differ
WidthDiffers101.8 mm101.6 mm
Depth147 mm147 mm
Height26.1 mm26.1 mm
WeightDiffers590 g655 g
Other featuresidentical
Drive devices burst data transfer rate (DMA)22
Drive devices burst data transfer rate (PIO)44
Drive devices burst data transfer rate (Ultra DMA)55

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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