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Product comparison · 2 internal hard drives

Seagate Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pk vs Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk

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  • 12specifications compared
  • 8differ
  • 4identical
  • 3known for one product only

Key differences

The Seagate Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pk has 100 GB more HDD capacity than the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk (500 GB vs 400 GB). The Seagate Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pk has 16 MB more storage drive buffer size than the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk (32 MB vs 16 MB). The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 2.9 ms more read seek time than the Seagate Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pk (3.9 ms vs 1 ms). Interface: Serial ATA II on the Seagate Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pk, SAS on the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk.

  • HDD capacity
    • 500 GB
    • 400 GB
  • Interface
    • Serial ATA II
    • SAS
  • Storage drive buffer size
    • 32 MB
    • 16 MB
  • Read seek time
    • 1 ms
    • 3.9 ms
  • Write seek time
    • 1.2 ms
    • 4.2 ms
  • Average latency
    • 4.16 ms
    • 2.98 ms
  • Width
    • 101.6 mm
    • 101.8 mm
  • Weight
    • 530 g
    • 771 g

Side by side

Differences highlightedShow differences only
15 specifications
A

Seagate

Barracuda ES.2 SATA 3.0-Gb/s 500-GB HD 20pkView product
B

Seagate

Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pkView product
Features6 differ
HDD capacityDiffers500 GB400 GB
InterfaceDiffersSerial ATA IISAS
Storage drive buffer sizeDiffers32 MB16 MB
Read seek timeDiffers1 ms3.9 ms
Write seek timeDiffers1.2 ms4.2 ms
Track to track seek timeKnown for one0.35 ms
Average latencyDiffers4.16 ms2.98 ms
HDD speedKnown for one7200 RPM
Weight & dimensions2 differ
WidthDiffers101.6 mm101.8 mm
Depth147 mm147 mm
Height26.1 mm26.1 mm
WeightDiffers530 g771 g
Other featuresidentical
Data transfer rate3 Gbit/s3 Gbit/s
InternalYesYes
Sustained data rateKnown for one97 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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