Product comparison · 2 internal hard drives

Seagate 120GB 3.5" Ultra ATA/100 vs Seagate 500GB 3.5" Ultra ATA/100

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  • 28specifications compared
  • 5differ
  • 23identical
  • 7known for one product only

Key differences

The Seagate 500GB 3.5" Ultra ATA/100 has 380 GB more HDD capacity than the Seagate 120GB 3.5" Ultra ATA/100 (500 GB vs 120 GB). The Seagate 500GB 3.5" Ultra ATA/100 has 6 MB more storage drive buffer size than the Seagate 120GB 3.5" Ultra ATA/100 (8 MB vs 2 MB). The Seagate 120GB 3.5" Ultra ATA/100 has 50 G more non-operating shock than the Seagate 500GB 3.5" Ultra ATA/100 (350 G vs 300 G).

  • HDD capacity
    • 120GB 3.5" Ultra ATA/100:120 GB
    • 500GB 3.5" Ultra ATA/100:500 GB
  • Storage drive buffer size
    • 120GB 3.5" Ultra ATA/100:2 MB
    • 500GB 3.5" Ultra ATA/100:8 MB
  • Non-operating shock
    • 120GB 3.5" Ultra ATA/100:350 G
    • 500GB 3.5" Ultra ATA/100:300 G
  • Depth
    • 120GB 3.5" Ultra ATA/100:146.9 mm
    • 500GB 3.5" Ultra ATA/100:147 mm
  • Weight
    • 120GB 3.5" Ultra ATA/100:580 g
    • 500GB 3.5" Ultra ATA/100:710 g

Side by side

Differences highlightedShow differences only (off)
Comparison of 120GB 3.5" Ultra ATA/100, 500GB 3.5" Ultra ATA/100
35 specifications
Features2 differ
HDD capacityDiffers120 GB500 GB
HDD speed7200 RPM7200 RPM
HDD size3.5"3.5"
InterfaceUltra-ATA/100Ultra-ATA/100
TypeHDDHDD
Storage drive buffer sizeDiffers2 MB8 MB
HDD number of cylinders1638316383
HDD number of heads1616
Read seek time11 ms11 ms
Write seek time12 ms12 ms
Average latency4.16 ms4.16 ms
Bytes per sectorKnown for one512Unknown — not stated by the source
Start/stop cycles5000050000
Poweridentical
Power consumption (idle)Known for one2.5 WUnknown — not stated by the source
Operating voltage5 / 12 V5 / 12 V
Start-up currentKnown for oneUnknown — not stated by the source2.6 A
Operational conditions1 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 altitude-60.96 - 3048 m-60.96 - 3048 m
Non-operating altitude-60.96 - 12192 m-60.96 - 12192 m
Operating shock63 G63 G
Non-operating shockDiffers350 G300 G
Weight & dimensions2 differ
Width101.6 mm101.6 mm
DepthDiffers146.9 mm147 mm
Height26 mm26 mm
WeightDiffers580 g710 g
Other featuresidentical
HDD transfer rateKnown for one100 Mbit/sUnknown — not stated by the source
Power requirementsKnown for one2.6Unknown — not stated by the source
Dimensions (WxDxH)Known for one101.6 x 146.9 x 26.04 mmUnknown — not stated by the source
InternalKnown for oneYesUnknown — not stated by the source
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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