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Product comparison · 2 internal hard drives

Seagate 300GB HDD vs Seagate 40GB HD

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  • 20specifications compared
  • 18differ
  • 2identical
  • 17known for one product only

Key differences

The Seagate 300GB HDD has 260 GB more HDD capacity than the Seagate 40GB HD (300 GB vs 40 GB). The Seagate 300GB HDD has 5,800 RPM more HDD speed than the Seagate 40GB HD (10000 RPM vs 4200 RPM). The Seagate 300GB HDD has 1" more HDD size than the Seagate 40GB HD (3.5" vs 2.5"). Interface: SCSI on the Seagate 300GB HDD, Ultra-ATA/100 on the Seagate 40GB HD. Component for: Server/workstation on the Seagate 300GB HDD, Laptop on the Seagate 40GB HD.

  • HDD capacity
    • 300 GB
    • 40 GB
  • HDD speed
    • 10000 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
    • 3 ms
    • 5.6 ms

Side by side

Differences highlightedShow differences only
37 specifications
A

Seagate

300GB HDDView product
B

Seagate

40GB HDView product
Features8 differ
HDD capacityDiffers300 GB40 GB
HDD speedDiffers10000 RPM4200 RPM
HDD sizeDiffers3.5"2.5"
InterfaceDiffersSCSIUltra-ATA/100
Component forDiffersServer/workstationLaptop
Storage drive buffer sizeDiffers8 MB2 MB
HDD number of headsDiffers82
Read seek timeKnown for one4.7 ms
Write seek timeKnown for one5.3 ms
Full stroke seek timeKnown for one10.3 ms
Track to track seek timeKnown for one0.2 ms
Average latencyDiffers3 ms5.6 ms
Average seek timeKnown for one12 ms
Bytes per sectorKnown for one512
Power3 differ
Power consumption (typical)Differs16.4 W2.4 W
Power consumption (idle)Differs10.1 W0.97 W
Operating voltageDiffers5 / 12 V5 V
Power consumption (standby)Known for one0.36 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
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 one1 G
Non-operating vibrationKnown for one3 G
Operating altitudeKnown for one-304.8 - 3048 m
Non-operating altitudeKnown for one-304.8 - 12192 m
Operating shockDiffers40 G225 G
Non-operating shockDiffers225 G800 G
Weight & dimensions4 differ
WidthDiffers101.6 mm69.8 mm
DepthDiffers146.1 mm100.2 mm
HeightDiffers25.4 mm9.5 mm
WeightDiffers726 g99 g
Other featuresidentical
Mac compatibilityKnown for oneNo

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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