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Product comparison · 2 internal hard drives

Samsung 640GB SATA II HDD vs Samsung SATA II 1.5TB

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  • 25specifications compared
  • 7differ
  • 18identical
  • 10known for one product only

Key differences

  • HDD capacity
    • 640 GB
    • 1.5 TB
  • HDD speed
    • 7200 RPM
    • 5400 RPM
  • HDD size
    • 2.5"
    • 3.5"
  • Storage drive buffer size
    • 16 MB
    • 32 MB
  • Average latency
    • 4.17 ms
    • 5.52 ms
  • Operating voltage
    • 5 V
    • 5 / 12 V
  • Weight
    • 610 g
    • 650 g

Side by side

Differences highlightedShow differences only
35 specifications
A

Samsung

640GB SATA II HDDView product
B

Samsung

SATA II 1.5TBView product
Features5 differ
HDD capacityDiffers640 GB1.5 TB
HDD speedDiffers7200 RPM5400 RPM
HDD sizeDiffers2.5"3.5"
InterfaceSerial ATA IISerial ATA II
Storage drive buffer sizeDiffers16 MB32 MB
Average seek time8.9 ms8.9 ms
Average latencyDiffers4.17 ms5.52 ms
Bytes per sector512512
Start/stop cycles5000050000
Mean time between failures (MTBF)Known for one1200000 h
TypeKnown for oneHDD
Power1 differ
Power consumption (standby)1 W1 W
Power consumption (PowerSave)1 W1 W
Operating voltageDiffers5 V5 / 12 V
Power consumption (idle)Known for one5.1 W
Power consumption (read)Known for one6.3 W
Power consumption (write)Known for one6.3 W
Operational conditionsidentical
Operating temperature (T-T)0 - 60 °C0 - 60 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Operating relative humidity (H-H)5 - 90%5 - 90%
Storage relative humidity (H-H)5 - 95%5 - 95%
Operating altitude-300 - 3000 m-300 - 3000 m
Non-operating altitude-300 - 12000 m-300 - 12000 m
Operating shock70 G70 G
Non-operating shock300 G300 G
Weight & dimensions1 differ
WidthKnown for one101.5 mm
DepthKnown for one147 mm
HeightKnown for one26.1 mm
WeightDiffers610 g650 g
Other featuresidentical
Dimensions (WxDxH)101.5 x 147 x 26.1 mm101.5 x 147 x 26.1 mm
Drive device, transfer rateKnown for one175 MB/s
Drive ready time12 s12 s
InternalYesYes
Maximum data transfer rate300 Mbit/s300 Mbit/s
Data transfer rateKnown for one166 Gbit/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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