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Product comparison · 2 internal hard drives

Seagate 146.8GB HD vs Seagate 400GB HDD

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  • 22specifications compared
  • 16differ
  • 6identical
  • 17known for one product only

Key differences

The Seagate 400GB HDD has 254 GB more HDD capacity than the Seagate 146.8GB HD (400 GB vs 146 GB). The Seagate 146.8GB HD has 7,800 RPM more HDD speed than the Seagate 400GB HDD (15000 RPM vs 7200 RPM). The Seagate 400GB HDD has 2.16 ms more average latency than the Seagate 146.8GB HD (4.16 ms vs 2 ms). Interface: SCSI on the Seagate 146.8GB HD, Ultra-ATA/100 on the Seagate 400GB HDD. Operating temperature (T-T): 5 - 55 °C on the Seagate 146.8GB HD, 0 - 60 °C on the Seagate 400GB HDD.

  • HDD capacity
    • 146 GB
    • 400 GB
  • HDD speed
    • 15000 RPM
    • 7200 RPM
  • Interface
    • SCSI
    • Ultra-ATA/100
  • Average latency
    • 2 ms
    • 4.16 ms
  • Operating temperature (T-T)
    • 5 - 55 °C
    • 0 - 60 °C
  • Operating relative humidity (H-H)
    • 5 - 95%
    • 5 - 90%
  • Operating vibration
    • 0.4 G
    • 0.5 G
  • Non-operating vibration
    • 1.2 G
    • 5 G

Side by side

Differences highlightedShow differences only
39 specifications
A

Seagate

146.8GB HDView product
B

Seagate

400GB HDDView product
Features4 differ
HDD capacityDiffers146 GB400 GB
HDD speedDiffers15000 RPM7200 RPM
InterfaceDiffersSCSIUltra-ATA/100
Average seek timeKnown for one8 ms
Average latencyDiffers2 ms4.16 ms
Bytes per sectorKnown for one512
Start/stop cyclesKnown for one50000
Component forKnown for oneServer/workstation
HDD number of headsKnown for one8
Read seek timeKnown for one3.5 ms
Write seek timeKnown for one4 ms
Full stroke seek timeKnown for one7.9 ms
Track to track seek timeKnown for one0.2 ms
SMART technologyKnown for oneYes
Mean time between failures (MTBF)Known for one1400000 h
Poweridentical
Power consumption (typical)Known for one12.4 W
Power consumption (standby)Known for one0.8 W
Power consumption (idle)Known for one7.2 W
Power consumption (read)Known for one12.8 W
Power consumption (write)Known for one12.8 W
Start-up currentKnown for one2.8 A
Operational conditions8 differ
Operating temperature (T-T)Differs5 - 55 °C0 - 60 °C
Operating relative humidity (H-H)Differs5 - 95%5 - 90%
Operating vibrationDiffers0.4 G0.5 G
Non-operating vibrationDiffers1.2 G5 G
Operating altitudeDiffers-304.8 - 3048 m-60.96 - 3048 m
Non-operating altitudeDiffers-304.8 - 12192 m-60.96 - 12192 m
Operating shockDiffers40 G63 G
Non-operating shockDiffers250 G300 G
Weight & dimensions4 differ
WidthDiffers101.6 mm101.8 mm
DepthDiffers146.1 mm147 mm
HeightDiffers25.4 mm26.1 mm
WeightDiffers730 g635 g

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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