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Product comparison · 2 internal hard drives

Samsung 30GB Ultra-ATA/66 HDD vs Samsung 40GB Ultra-ATA/133 HDD

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  • 19specifications compared
  • 16differ
  • 3identical
  • 11known for one product only

Key differences

The Samsung 40GB Ultra-ATA/133 HDD has 10 GB more HDD capacity than the Samsung 30GB Ultra-ATA/66 HDD (40 GB vs 30 GB). The Samsung 40GB Ultra-ATA/133 HDD has 3,000 RPM more HDD speed than the Samsung 30GB Ultra-ATA/66 HDD (7200 RPM vs 4200 RPM). The Samsung 40GB Ultra-ATA/133 HDD has 1.7" more HDD size than the Samsung 30GB Ultra-ATA/66 HDD (3.5" vs 1.8"). Interface: Ultra-ATA/66 on the Samsung 30GB Ultra-ATA/66 HDD, Ultra-ATA/133 on the Samsung 40GB Ultra-ATA/133 HDD. Operating voltage: 3.3 V on the Samsung 30GB Ultra-ATA/66 HDD, 5 / 12 V on the Samsung 40GB Ultra-ATA/133 HDD.

  • HDD capacity
    • 30 GB
    • 40 GB
  • HDD speed
    • 4200 RPM
    • 7200 RPM
  • HDD size
    • 1.8"
    • 3.5"
  • Interface
    • Ultra-ATA/66
    • Ultra-ATA/133
  • Full stroke seek time
    • 26 ms
    • 18 ms
  • Track to track seek time
    • 3 ms
    • 0.8 ms
  • Average seek time
    • 15 ms
    • 8.9 ms
  • Average latency
    • 7.14 ms
    • 4.17 ms

Side by side

Differences highlightedShow differences only
30 specifications
A

Samsung

30GB Ultra-ATA/66 HDDView product
B

Samsung

40GB Ultra-ATA/133 HDDView product
Features9 differ
HDD capacityDiffers30 GB40 GB
HDD speedDiffers4200 RPM7200 RPM
HDD sizeDiffers1.8"3.5"
InterfaceDiffersUltra-ATA/66Ultra-ATA/133
Storage drive buffer size2 MB2 MB
Full stroke seek timeDiffers26 ms18 ms
Track to track seek timeDiffers3 ms0.8 ms
Average seek timeDiffers15 ms8.9 ms
Average latencyDiffers7.14 ms4.17 ms
Bytes per sector512512
Start/stop cyclesDiffers60000050000
Mean time between failures (MTBF)Known for one600000 h
Power3 differ
Power consumption (typical)Differs0.65 W7 W
Power consumption (standby)Differs0.3 W1.5 W
Operating voltageDiffers3.3 V5 / 12 V
Operational conditionsidentical
Operating temperature (T-T)Known for one5 - 60 °C
Storage temperature (T-T)Known for one-20 - 85 °C
Operating relative humidity (H-H)Known for one8 - 90%
Storage relative humidity (H-H)Known for one8 - 95%
Operating altitudeKnown for one-300 - 3000 m
Non-operating altitudeKnown for one-400 - 15000 m
Weight & dimensions4 differ
WidthDiffers54 mm146.1 mm
DepthDiffers71 mm101.6 mm
HeightDiffers5 mm25.4 mm
WeightDiffers48 g631 g
Other featuresidentical
Power requirementsKnown for one+3.3V
Disks included quantityKnown for one1 pc(s)
InternalYesYes
Drive ready timeKnown for one5 s
Acoustic pressure emissionsKnown for one2.5 dB

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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