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Product comparison · 2 internal hard drives

Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s vs Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100

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  • 19specifications compared
  • 13differ
  • 6identical
  • 7known for one product only

Key differences

The Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s has 120 GB more HDD capacity than the Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100 (160 GB vs 40 GB). The Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s has 1,800 RPM more HDD speed than the Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100 (7200 RPM vs 5400 RPM). The Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100 has 6 MB more storage drive buffer size than the Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s (8 MB vs 2 MB). Interface: Serial ATA II on the Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s, Ultra-ATA/100 on the Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100. Dimensions (WxDxH): 101.6 x 146.99 x 19.99 mm on the Seagate Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/s, 69.85 x 100.2 x 9.5 mm on the Seagate Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100.

  • HDD capacity
    • 160 GB
    • 40 GB
  • HDD speed
    • 7200 RPM
    • 5400 RPM
  • Interface
    • Serial ATA II
    • Ultra-ATA/100
  • Storage drive buffer size
    • 2 MB
    • 8 MB
  • Average latency
    • 4.16 ms
    • 5.6 ms
  • Power consumption (standby)
    • 1.5 W
    • 0.2 W
  • Operating shock
    • 63 G
    • 350 G
  • Non-operating shock
    • 350 G
    • 900 G

Side by side

Differences highlightedShow differences only
26 specifications
A

Seagate

Barracuda 7200.9 160 GB 7200 rpm SATA 3Gb/sView product
B

Seagate

Momentus 5400.3 40 GB 5400 rpm Ultra ATA/100View product
Features5 differ
HDD capacityDiffers160 GB40 GB
HDD speedDiffers7200 RPM5400 RPM
HDD sizeKnown for one2.5"
InterfaceDiffersSerial ATA IIUltra-ATA/100
Component forKnown for oneLaptop
Storage drive buffer sizeDiffers2 MB8 MB
HDD number of headsKnown for one1
Average latencyDiffers4.16 ms5.6 ms
Start/stop cyclesKnown for one600000
Power1 differ
Power consumption (standby)Differs1.5 W0.2 W
Operating voltageKnown for one5 V
Start-up currentKnown for one1 A
Operational conditions2 differ
Operating shockDiffers63 G350 G
Non-operating shockDiffers350 G900 G
Weight & dimensions4 differ
WidthDiffers101.6 mm69.8 mm
DepthDiffers147 mm100.2 mm
HeightDiffers20 mm9.5 mm
WeightDiffers380 g98 g
Other features1 differ
Dimensions (WxDxH)Differs101.6 x 146.99 x 19.99 mm69.85 x 100.2 x 9.5 mm
Drive device, transfer rateKnown for one100 MB/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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