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Product comparison · 2 internal hard drives

Samsung HD753LJ - 750GB HDD vs Seagate 40GB Serial ATA

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  • 24specifications compared
  • 21differ
  • 3identical
  • 18known for one product only

Key differences

The Samsung HD753LJ - 750GB HDD has 710 GB more HDD capacity than the Seagate 40GB Serial ATA (750 GB vs 40 GB). The Samsung HD753LJ - 750GB HDD has 1,800 RPM more HDD speed than the Seagate 40GB Serial ATA (7200 RPM vs 5400 RPM). The Samsung HD753LJ - 750GB HDD has 1" more HDD size than the Seagate 40GB Serial ATA (3.5" vs 2.5"). Interface: Serial ATA II on the Samsung HD753LJ - 750GB HDD, Serial ATA on the Seagate 40GB Serial ATA. Operating voltage: 5 / 12 V on the Samsung HD753LJ - 750GB HDD, 5 V on the Seagate 40GB Serial ATA.

  • HDD capacity
    • 750 GB
    • 40 GB
  • HDD speed
    • 7200 RPM
    • 5400 RPM
  • HDD size
    • 3.5"
    • 2.5"
  • Interface
    • Serial ATA II
    • Serial ATA
  • Storage drive buffer size
    • 32 MB
    • 8 MB
  • Average seek time
    • 8.9 ms
    • 12.5 ms
  • Average latency
    • 4.17 ms
    • 5.6 ms
  • Start/stop cycles
    • 50000
    • 300000

Side by side

Differences highlightedShow differences only
42 specifications
A

Samsung

HD753LJ - 750GB HDDView product
B

Seagate

40GB Serial ATAView product
Features8 differ
HDD capacityDiffers750 GB40 GB
HDD speedDiffers7200 RPM5400 RPM
HDD sizeDiffers3.5"2.5"
InterfaceDiffersSerial ATA IISerial ATA
TypeKnown for oneHDD
Storage drive buffer sizeDiffers32 MB8 MB
HDD number of headsKnown for one1
Read seek timeKnown for one13 ms
Write seek timeKnown for one14 ms
Full stroke seek timeKnown for one23 ms
Track to track seek timeKnown for one1.5 ms
Average seek timeDiffers8.9 ms12.5 ms
Average latencyDiffers4.17 ms5.6 ms
Bytes per sector512512
Start/stop cyclesDiffers50000300000
Power3 differ
Power consumption (standby)Differs1.2 W0.26 W
Power consumption (PowerSave)Differs1.2 W0.26 W
Power consumption (idle)Known for one1.65 W
Power consumption (read)Known for one1.4 W
Power consumption (write)Known for one1.5 W
Operating voltageDiffers5 / 12 V5 V
Start-up currentKnown for one1.3 A
Power consumption (typical)Known for one7.7 W
Operational conditions6 differ
Operating temperature (T-T)Differs0 - 60 °C-30 - 85 °C
Storage temperature (T-T)Differs-40 - 70 °C-40 - 95 °C
Operating relative humidity (H-H)5 - 90%5 - 90%
Storage relative humidity (H-H)5 - 95%5 - 95%
Operating vibrationKnown for one2 G
Non-operating vibrationKnown for one5 G
Operating altitudeDiffers-300 - 3000 m-304.8 - 5500 m
Non-operating altitudeDiffers-300 - 12000 m-304.8 - 12192 m
Operating shockDiffers70 G300 G
Non-operating shockDiffers350 G900 G
Weight & dimensions4 differ
WidthDiffers101.5 mm69.8 mm
DepthDiffers147 mm100.2 mm
HeightDiffers26.1 mm9.5 mm
WeightDiffers640 g102 g
Packaging dataidentical
Quantity per packKnown for one1 pc(s)
Other featuresidentical
Windows operating systems supportedKnown for oneYes
Power requirementsKnown for one+5V±5%, +12V±10%
Drive ready timeKnown for one12 s
InternalKnown for oneYes

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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