Product comparison · 2 internal hard drives

Samsung 30GB Ultra ATA Hard Drive vs Seagate 40GB HD

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  • 17specifications compared
  • 11differ
  • 6identical
  • 22known for one product only

Key differences

The Seagate 40GB HD has 10 GB more HDD capacity than the Samsung 30GB Ultra ATA Hard Drive (40 GB vs 30 GB). The Samsung 30GB Ultra ATA Hard Drive has 1,200 RPM more HDD speed than the Seagate 40GB HD (5400 RPM vs 4200 RPM). The Samsung 30GB Ultra ATA Hard Drive has 6 MB more storage drive buffer size than the Seagate 40GB HD (8 MB vs 2 MB). Interface: Ultra-ATA/133 on the Samsung 30GB Ultra ATA Hard Drive, Ultra-ATA/100 on the Seagate 40GB HD. Storage temperature (T-T): -40 - 70 °C on the Samsung 30GB Ultra ATA Hard Drive, -40 - 65 °C on the Seagate 40GB HD.

  • HDD capacity
    • 30GB Ultra ATA Hard Drive:30 GB
    • 40GB HD:40 GB
  • HDD speed
    • 30GB Ultra ATA Hard Drive:5400 RPM
    • 40GB HD:4200 RPM
  • Interface
    • 30GB Ultra ATA Hard Drive:Ultra-ATA/133
    • 40GB HD:Ultra-ATA/100
  • Storage drive buffer size
    • 30GB Ultra ATA Hard Drive:8 MB
    • 40GB HD:2 MB
  • Power consumption (standby)
    • 30GB Ultra ATA Hard Drive:0.25 W
    • 40GB HD:0.36 W
  • Storage temperature (T-T)
    • 30GB Ultra ATA Hard Drive:-40 - 70 °C
    • 40GB HD:-40 - 65 °C
  • Operating shock
    • 30GB Ultra ATA Hard Drive:250 G
    • 40GB HD:225 G
  • Non-operating shock
    • 30GB Ultra ATA Hard Drive:350 G
    • 40GB HD:800 G

Side by side

Differences highlightedShow differences only (on)
Comparison of 30GB Ultra ATA Hard Drive, 40GB HD
39 specifications
Features4 differ
HDD capacityDiffers30 GB40 GB
HDD speedDiffers5400 RPM4200 RPM
InterfaceDiffersUltra-ATA/133Ultra-ATA/100
Storage drive buffer sizeDiffers8 MB2 MB
Access timeKnown for one12 msUnknown — not stated by the source
Full stroke seek timeKnown for one22 msUnknown — not stated by the source
Track to track seek timeKnown for one2 msUnknown — not stated by the source
Start/stop cyclesKnown for one300000Unknown — not stated by the source
Mean time between failures (MTBF)Known for one330000 hUnknown — not stated by the source
TypeKnown for oneUnknown — not stated by the sourceHDD
Component forKnown for oneUnknown — not stated by the sourceLaptop
HDD number of headsKnown for oneUnknown — not stated by the source2
Average seek timeKnown for oneUnknown — not stated by the source12 ms
Power1 differ
Power consumption (standby)Differs0.25 W0.36 W
Power consumption (typical)Known for oneUnknown — not stated by the source2.4 W
Power consumption (idle)Known for oneUnknown — not stated by the source0.97 W
Power consumption (read)Known for oneUnknown — not stated by the source2.4 W
Power consumption (write)Known for oneUnknown — not stated by the source2.4 W
Start-up currentKnown for oneUnknown — not stated by the source1.2 A
Operational conditions3 differ
Storage temperature (T-T)Differs-40 - 70 °C-40 - 65 °C
Operating relative humidity (H-H)Known for one5 - 90%Unknown — not stated by the source
Storage relative humidity (H-H)Known for one5 - 95%Unknown — not stated by the source
Operating altitudeKnown for one-305 - 3050 mUnknown — not stated by the source
Non-operating altitudeKnown for one-305 - 12200 mUnknown — not stated by the source
Operating shockDiffers250 G225 G
Non-operating shockDiffers350 G800 G
Weight & dimensions3 differ
WidthDiffers100 mm69.8 mm
DepthDiffers70 mm100.2 mm
WeightDiffers100 g99 g
Other featuresidentical
Power requirementsKnown for one+5V±5%Unknown — not stated by the source
Drive device, transfer rateKnown for one100 MB/sUnknown — not stated by the source
Drive ready timeKnown for one4 sUnknown — not stated by the source
InternalKnown for oneYesUnknown — not stated by the source

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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