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Product comparison · 2 internal hard drives

Seagate Desktop SSHD ST4000DX001-20PK internal hard drive vs Seagate Desktop HDD ST500DM002-25PK internal hard drive

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  • 22specifications compared
  • 12differ
  • 10identical
  • 8known for one product only

Key differences

The Seagate Desktop SSHD ST4000DX001-20PK internal hard drive has 48 MB more storage drive buffer size than the Seagate Desktop HDD ST500DM002-25PK internal hard drive (64 MB vs 16 MB). The Seagate Desktop SSHD ST4000DX001-20PK internal hard drive has 3 more HDD cylinders than the Seagate Desktop HDD ST500DM002-25PK internal hard drive (4 vs 1). The Seagate Desktop SSHD ST4000DX001-20PK internal hard drive has 6 more HDD heads than the Seagate Desktop HDD ST500DM002-25PK internal hard drive (8 vs 2). HDD capacity: 4 TB on the Seagate Desktop SSHD ST4000DX001-20PK internal hard drive, 500 GB on the Seagate Desktop HDD ST500DM002-25PK internal hard drive. Type: Hybrid-HDD on the Seagate Desktop SSHD ST4000DX001-20PK internal hard drive, HDD on the Seagate Desktop HDD ST500DM002-25PK internal hard drive.

  • HDD capacity
    • 4 TB
    • 500 GB
  • Type
    • Hybrid-HDD
    • HDD
  • Storage drive buffer size
    • 64 MB
    • 16 MB
  • HDD number of cylinders
    • 4
    • 1
  • HDD number of heads
    • 8
    • 2
  • Read seek time
    • 12 ms
    • 11 ms
  • Power consumption (typical)
    • 7.5 W
    • 6.19 W
  • Power consumption (standby)
    • 0.75 W
    • 0.63 W

Side by side

Differences highlightedShow differences only
30 specifications
A

Seagate

Desktop SSHD ST4000DX001-20PK internal hard drive

Model ST4000DX001-20PK

View product
B

Seagate

Desktop HDD ST500DM002-25PK internal hard drive

Model ST500DM002-25PK

View product
Features6 differ
HDD capacityDiffers4 TB500 GB
HDD size3.5"3.5"
InterfaceSerial ATA IIISerial ATA III
TypeDiffersHybrid-HDDHDD
Storage drive buffer sizeDiffers64 MB16 MB
Hybrid-HDD cache memoryKnown for one8 GB
HDD number of cylindersDiffers41
HDD number of headsDiffers82
Read seek timeDiffers12 ms11 ms
Write seek time12 ms12 ms
Bytes per sector40964096
Start/stop cyclesKnown for one300000
HDD speedKnown for one7200 RPM
Power3 differ
Power consumption (typical)Differs7.5 W6.19 W
Power consumption (standby)Differs0.75 W0.63 W
Power consumption (idle)Differs6.2 W4.6 W
Operating voltage5 / 12 V5 / 12 V
Start-up currentKnown for one2 A
Operational conditionsidentical
Operating temperature (T-T)0 - 60 °C0 - 60 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Weight & dimensions2 differ
Width101.6 mm101.6 mm
Depth147 mm147 mm
HeightDiffers26.1 mm20 mm
WeightDiffers610 g415 g
Packaging data1 differ
Quantity per packDiffers20 pc(s)25 pc(s)
Other featuresidentical
Data transfer rate6 Gbit/s6 Gbit/s
Windows operating systems supportedKnown for oneYes
Mac operating systems supportedKnown for oneYes
Packaging contentidentical
Quick start guideKnown for oneYes
Bundled softwareKnown for oneDiscWizard

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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