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Product comparison · 2 internal hard drives

Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk vs Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk

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  • 15specifications compared
  • 10differ
  • 5identical
  • 17known for one product only

Key differences

The Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk has 87 GB more HDD capacity than the Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk (160 GB vs 73 GB). The Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk has 7,800 RPM more HDD speed than the Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk (15000 RPM vs 7200 RPM). The Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk has 248 more HDD heads than the Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk (256 vs 8). Interface: Ultra-ATA/100 on the Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk, Ultra320 SCSI on the Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk. Dimensions (WxDxH): 101.6 x 146.9 x 26.04 mm on the Seagate Barracuda 7200.9 160, Ultra ATA/100, 20pk, 101.6 x 146.6 x 25.4 mm on the Seagate Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulk.

  • HDD capacity
    • 160 GB
    • 73 GB
  • HDD speed
    • 7200 RPM
    • 15000 RPM
  • Interface
    • Ultra-ATA/100
    • Ultra320 SCSI
  • HDD number of heads
    • 256
    • 8
  • Average latency
    • 4.16 ms
    • 2 ms
  • Depth
    • 146.9 mm
    • 146.6 mm
  • Height
    • 26 mm
    • 25.4 mm
  • Weight
    • 580 g
    • 800 g

Side by side

Differences highlightedShow differences only
32 specifications
A

Seagate

Barracuda 7200.9 160, Ultra ATA/100, 20pkView product
B

Seagate

Cheetah 15K.3 73GB Ultra320 SCSI 15K RPM 8MB 20pk bulkView product
Features5 differ
HDD capacityDiffers160 GB73 GB
HDD speedDiffers7200 RPM15000 RPM
HDD size3.5"3.5"
InterfaceDiffersUltra-ATA/100Ultra320 SCSI
Storage drive buffer size8 MB8 MB
HDD number of headsDiffers2568
Read seek timeKnown for one3.6 ms
Write seek timeKnown for one4 ms
Average latencyDiffers4.16 ms2 ms
HDD number of cylindersKnown for one1024
Poweridentical
Operating voltage5 / 12 V5 / 12 V
Start-up currentKnown for one1.15 A
Operational conditionsidentical
Operating temperature (T-T)Known for one5 - 55 °C
Storage temperature (T-T)Known for one-40 - 70 °C
Operating shockKnown for one15 G
Non-operating shockKnown for one250 G
Weight & dimensions3 differ
Width101.6 mm101.6 mm
DepthDiffers146.9 mm146.6 mm
HeightDiffers26 mm25.4 mm
WeightDiffers580 g800 g
Other features2 differ
HDD transfer rateDiffers100 Mbit/s320 Mbit/s
Dimensions (WxDxH)Differs101.6 x 146.9 x 26.04 mm101.6 x 146.6 x 25.4 mm
External power adapterKnown for oneNo
InternalYesYes
Mac compatibilityKnown for oneNo
USB poweredKnown for oneNo
Compatible productsKnown for onePCs
Acoustic pressure emissionsKnown for one35 dB
Power requirementsKnown for one2.6
Drive devices burst data transfer rate (DMA)Known for one2
Drive devices burst data transfer rate (PIO)Known for one4
Drive devices burst data transfer rate (Ultra DMA)Known for one5

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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