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Product comparison · 2 internal hard drives

Seagate 146.8GB HD vs Seagate 40GB HD

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  • 18specifications compared
  • 16differ
  • 2identical
  • 20known for one product only

Key differences

The Seagate 146.8GB HD has 106 GB more HDD capacity than the Seagate 40GB HD (146 GB vs 40 GB). The Seagate 146.8GB HD has 10,800 RPM more HDD speed than the Seagate 40GB HD (15000 RPM vs 4200 RPM). The Seagate 146.8GB HD has 1" more HDD size than the Seagate 40GB HD (3.5" vs 2.5"). Interface: SCSI on the Seagate 146.8GB HD, Ultra-ATA/100 on the Seagate 40GB HD. Component for: Server/workstation on the Seagate 146.8GB HD, Laptop on the Seagate 40GB HD.

  • HDD capacity
    • 146 GB
    • 40 GB
  • HDD speed
    • 15000 RPM
    • 4200 RPM
  • HDD size
    • 3.5"
    • 2.5"
  • Interface
    • SCSI
    • Ultra-ATA/100
  • Component for
    • Server/workstation
    • Laptop
  • Storage drive buffer size
    • 8 MB
    • 2 MB
  • HDD number of heads
    • 8
    • 2
  • Average latency
    • 2 ms
    • 5.6 ms

Side by side

Differences highlightedShow differences only
38 specifications
A

Seagate

146.8GB HDView product
B

Seagate

40GB HDView product
Features8 differ
HDD capacityDiffers146 GB40 GB
HDD speedDiffers15000 RPM4200 RPM
HDD sizeDiffers3.5"2.5"
InterfaceDiffersSCSIUltra-ATA/100
TypeHDDHDD
Component forDiffersServer/workstationLaptop
Storage drive buffer sizeDiffers8 MB2 MB
HDD number of headsDiffers82
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
Average latencyDiffers2 ms5.6 ms
SMART technologyKnown for oneYes
Mean time between failures (MTBF)Known for one1400000 h
Average seek timeKnown for one12 ms
Bytes per sectorKnown for one512
Power1 differ
Operating voltageDiffers5 / 12 V5 V
Power consumption (typical)Known for one2.4 W
Power consumption (standby)Known for one0.36 W
Power consumption (idle)Known for one0.97 W
Power consumption (read)Known for one2.4 W
Power consumption (write)Known for one2.4 W
Start-up currentKnown for one1.2 A
Operational conditions3 differ
Operating temperature (T-T)5 - 55 °C5 - 55 °C
Storage temperature (T-T)Differs-40 - 70 °C-40 - 65 °C
Operating relative humidity (H-H)Known for one5 - 95%
Storage relative humidity (H-H)Known for one5 - 95%
Operating vibrationKnown for one0.4 G
Non-operating vibrationKnown for one1.2 G
Operating altitudeKnown for one-304.8 - 3048 m
Non-operating altitudeKnown for one-304.8 - 12192 m
Operating shockDiffers40 G225 G
Non-operating shockDiffers250 G800 G
Weight & dimensions4 differ
WidthDiffers101.6 mm69.8 mm
DepthDiffers146.1 mm100.2 mm
HeightDiffers25.4 mm9.5 mm
WeightDiffers730 g99 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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