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Product comparison · 2 optical disc drives

iStorage External DVD+/-RW vs LG GH20NS optical disc drive Internal Black

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  • 18specifications compared
  • 8differ
  • 10identical
  • 36known for one product only

Key differences

  • Internal
    • No
    • Yes
  • CD write speed
    • 52x
    • 48x
  • DVD+R Double Layer write speed
    • 8x
    • 10x
  • DVD-R Double Layer write speed
    • 6x
    • 10x
  • DVD-ROM read speed
    • 20x
    • 16x
  • Weight
    • 1.29 kg
    • 780 g
  • Dimensions (WxDxH)
    • 244 x 155 x 44 mm
    • 146 x 41.3 x 165 mm

Side by side

Differences highlightedShow differences only
54 specifications
A

iStorage

External DVD+/-RWView product
B

LG

GH20NS optical disc drive Internal Black

Model GH20NS

View product
Design1 differ
InternalDiffersNoYes
Product colourKnown for oneBlack
Disc loading typeKnown for oneTray
MountingKnown for oneVertical/Horizontal
Performanceidentical
InterfaceKnown for oneSerial ATA
Drive device, buffer size2 MB2 MB
Plug and PlayKnown for oneYes
Writing speed3 differ
CD write speedDiffers52x48x
CD rewrite speed32x32x
CD-R write speedKnown for one48x
CD-RW write speedKnown for one32x
DVD+R Double Layer write speedDiffers8x10x
DVD+R write speed20x20x
DVD+RW write speed8x8x
DVD-R Double Layer write speedDiffers6x10x
DVD-R write speed20x20x
DVD-RAM write speedKnown for one12x
DVD-RW write speed6x6x
Reading speed1 differ
CD read speed48x48x
CD-R read speedKnown for one48x
CD-ROM read speedKnown for one48x
CD-RW read speedKnown for one40x
DVD+R read speedKnown for one16x
DVD-R Double Layer read speedKnown for one12x
DVD-R read speedKnown for one16x
DVD-RAM read speedKnown for one5x
DVD-ROM read speedDiffers20x16x
DVD-RW read speedKnown for one13x
DVD+R Double Layer read speedKnown for one12x
DVD+RW read speedKnown for one13x
Access timeidentical
DVD drive average random access timeKnown for one175 ms
CD-ROM drive average random access timeKnown for one120 ms
Access timeKnown for one140 ms
Record modesidentical
Disc-at-once (DAO)YesYes
Layer Jump RecordingKnown for oneYes
Packet writingKnown for oneYes
Random writeKnown for oneYes
Sequential writingKnown for oneYes
Session-at-once (SAO)YesYes
Track-at-once (TAO)YesYes
Fixed packetKnown for oneYes
Multi sessionKnown for oneYes
Variable packetKnown for oneYes
Operational conditionsidentical
Operating relative humidity (H-H)Known for one15 - 85%
Operating temperature (T-T)Known for one5 - 45 °C
Storage relative humidity (H-H)Known for one10 - 90%
Storage temperature (T-T)Known for one-30 - 60 °C
Weight & dimensions1 differ
WeightDiffers1.29 kg780 g
Other features2 differ
Power requirementsKnown for one+12V / +5V DC
Dimensions (WxDxH)Differs244 x 155 x 44 mm146 x 41.3 x 165 mm
Minimum RAMKnown for one512 MB
Minimum processorKnown for onePentium 4 1.4 GHz
Compatible operating systemsDiffers- Windows 98SE - Windows ME - Windows 2000 - Windows XP - Windows Vista - Mac OS X 10-10.4Windows ME, 2000 Professional, XP Home, Professional, Vista
Media types supportedKnown for oneDVD-ROM, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+R9, DVD-Video, CD-ROM XA, CD-Audio, CD Extra, CD Text, Photo-CD, Video CD, Hybrid CD, Lightscribe

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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