Product comparison · 2 internal hard drives

Samsung 400GB HDD vs Seagate 400GB 3.5" SATA II

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  • 22specifications compared
  • 8differ
  • 14identical
  • 16known for one product only

Key differences

The Seagate 400GB 3.5" SATA II has 8 MB more storage drive buffer size than the Samsung 400GB HDD (16 MB vs 8 MB). The Samsung 400GB HDD has 0.01 ms more average latency than the Seagate 400GB 3.5" SATA II (4.17 ms vs 4.16 ms). The Seagate 400GB 3.5" SATA II has 0.9 mm more depth than the Samsung 400GB HDD (147 mm vs 146.1 mm). Interface: Ultra-ATA/100 on the Samsung 400GB HDD, Serial ATA II on the Seagate 400GB 3.5" SATA II. Operating altitude: -304.8 - 3048 m on the Samsung 400GB HDD, -60.96 - 3048 m on the Seagate 400GB 3.5" SATA II.

  • Interface
    • 400GB HDD:Ultra-ATA/100
    • 400GB 3.5" SATA II:Serial ATA II
  • Storage drive buffer size
    • 400GB HDD:8 MB
    • 400GB 3.5" SATA II:16 MB
  • Average latency
    • 400GB HDD:4.17 ms
    • 400GB 3.5" SATA II:4.16 ms
  • Operating altitude
    • 400GB HDD:-304.8 - 3048 m
    • 400GB 3.5" SATA II:-60.96 - 3048 m
  • Non-operating altitude
    • 400GB HDD:-304.8 - 12192 m
    • 400GB 3.5" SATA II:-60.96 - 12192 m
  • Depth
    • 400GB HDD:146.1 mm
    • 400GB 3.5" SATA II:147 mm
  • Height
    • 400GB HDD:25.4 mm
    • 400GB 3.5" SATA II:26.1 mm
  • Weight
    • 400GB HDD:653 g
    • 400GB 3.5" SATA II:710 g

Side by side

Differences highlightedShow differences only (on)
Comparison of 400GB HDD, 400GB 3.5" SATA II
38 specifications
Features3 differ
InterfaceDiffersUltra-ATA/100Serial ATA II
Storage drive buffer sizeDiffers8 MB16 MB
Full stroke seek timeKnown for one18 msUnknown — not stated by the source
Track to track seek timeKnown for one0.8 msUnknown — not stated by the source
Average seek timeKnown for one8.9 msUnknown — not stated by the source
Average latencyDiffers4.17 ms4.16 ms
Mean time between failures (MTBF)Known for one600000 hUnknown — not stated by the source
HDD number of cylindersKnown for oneUnknown — not stated by the source16383
HDD number of headsKnown for oneUnknown — not stated by the source16
Read seek timeKnown for oneUnknown — not stated by the source8.2 ms
Write seek timeKnown for oneUnknown — not stated by the source9 ms
Poweridentical
Power consumption (typical)Known for one8.7 WUnknown — not stated by the source
Power consumption (standby)Known for one0.6 WUnknown — not stated by the source
Power consumption (PowerSave)Known for one0.6 WUnknown — not stated by the source
Power consumption (idle)Known for one7.2 WUnknown — not stated by the source
Start-up currentKnown for oneUnknown — not stated by the source2.6 A
Operational conditions2 differ
Operating vibrationKnown for one1 GUnknown — not stated by the source
Non-operating vibrationKnown for one2 GUnknown — not stated by the source
Operating altitudeDiffers-304.8 - 3048 m-60.96 - 3048 m
Non-operating altitudeDiffers-304.8 - 12192 m-60.96 - 12192 m
Weight & dimensions3 differ
DepthDiffers146.1 mm147 mm
HeightDiffers25.4 mm26.1 mm
WeightDiffers653 g710 g
Other featuresidentical
Drive ready timeKnown for one10 sUnknown — 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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