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Product comparison · 2 internal hard drives

Samsung 400GB Serial ATA II HDD, 20-Pk vs Seagate Barracuda 7200.9 40GB Serial ATA II 7200RPM 2MB NCQ 20pk bulk

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  • 10specifications compared
  • 4differ
  • 6identical
  • 28known for one product only

Key differences

The Samsung 400GB Serial ATA II HDD, 20-Pk has 360 GB more HDD capacity than the Seagate Barracuda 7200.9 40GB Serial ATA II 7200RPM 2MB NCQ 20pk bulk (400 GB vs 40 GB). The Samsung 400GB Serial ATA II HDD, 20-Pk has 6 MB more storage drive buffer size than the Seagate Barracuda 7200.9 40GB Serial ATA II 7200RPM 2MB NCQ 20pk bulk (8 MB vs 2 MB). The Samsung 400GB Serial ATA II HDD, 20-Pk has 0.01 ms more average latency than the Seagate Barracuda 7200.9 40GB Serial ATA II 7200RPM 2MB NCQ 20pk bulk (4.17 ms vs 4.16 ms).

  • HDD capacity
    • 400 GB
    • 40 GB
  • Storage drive buffer size
    • 8 MB
    • 2 MB
  • Average latency
    • 4.17 ms
    • 4.16 ms
  • Non-operating shock
    • 300 G
    • 350 G

Side by side

Differences highlightedShow differences only
38 specifications
A

Samsung

400GB Serial ATA II HDD, 20-PkView product
B

Seagate

Barracuda 7200.9 40GB Serial ATA II 7200RPM 2MB NCQ 20pk bulkView product
Features3 differ
HDD capacityDiffers400 GB40 GB
HDD speed7200 RPM7200 RPM
HDD sizeKnown for one3.5"
InterfaceSerial ATA IISerial ATA II
Storage drive buffer sizeDiffers8 MB2 MB
HDD number of cylindersKnown for one16383
HDD number of headsKnown for one16
Average latencyDiffers4.17 ms4.16 ms
Full stroke seek timeKnown for one18 ms
Track to track seek timeKnown for one0.8 ms
Average seek timeKnown for one8.9 ms
Bytes per sectorKnown for one512
Mean time between failures (MTBF)Known for one600000 h
Poweridentical
Power consumption (standby)Known for one1.30 W
Operating voltageKnown for one5 / 12 V
Start-up currentKnown for one2.8 A
Power consumption (typical)Known for one10 W
Power consumption (off)Known for one1.3 W
Operational conditions1 differ
Operating temperature (T-T)0 - 60 °C0 - 60 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Operating shock63 G63 G
Non-operating shockDiffers300 G350 G
Operating relative humidity (H-H)Known for one5 - 90%
Storage relative humidity (H-H)Known for one5 - 95%
Non-operating altitudeKnown for one12000
Weight & dimensionsidentical
WidthKnown for one101.6 mm
DepthKnown for one147 mm
HeightKnown for one26.1 mm
WeightKnown for one580 g
Other featuresidentical
Dimensions (WxDxH)Known for one101.6 x 146.99 x 26.1 mm
Data transfer rateKnown for one3 Gbit/s
External power adapterKnown for oneNo
InternalYesYes
Mac compatibilityKnown for oneNo
USB poweredKnown for oneNo
Compatible productsKnown for onePCs
HDD transfer rateKnown for one1000 Mbit/s
Drive ready timeKnown for one10 s

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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