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Product comparison · 2 optical disc drives

LG Multi DVD Rewriter GSA-H20LB black vs NEC ND-7550 DVD-RW Black Slim

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  • 31specifications compared
  • 21differ
  • 10identical
  • 17known for one product only

Key differences

  • CD write speed
    • 48x
    • 24x
  • CD rewrite speed
    • 32x
    • 20x
  • CD-R write speed
    • 48x
    • 24x
  • CD-RW write speed
    • 32x
    • 20x
  • DVD+R write speed
    • 16x
    • 8x
  • DVD-R write speed
    • 16x
    • 8x
  • DVD write speed
    • 16x
    • 8x
  • DVD rewrite speed
    • 6x
    • 8x

Side by side

Differences highlightedShow differences only
48 specifications
A

LG

Multi DVD Rewriter GSA-H20LB blackView product
B

NEC

ND-7550 DVD-RW Black SlimView product
Designidentical
InternalYesYes
Product colourKnown for oneBlack
Disc loading typeTrayTray
Performanceidentical
Optical drive typeDVD-RWDVD-RW
InterfaceKnown for oneEIDE/ATA
LightScribeKnown for oneYes
Drive device, buffer sizeKnown for one2 MB
DVD-ROM transfer rate (sustained mode)Known for one22 MB/s
Plug and PlayKnown for oneNo
Writing speed8 differ
CD write speedDiffers48x24x
CD rewrite speedDiffers32x20x
CD-R write speedDiffers48x24x
CD-RW write speedDiffers32x20x
DVD+R write speedDiffers16x8x
DVD+RW write speed8x8x
DVD-R Double Layer write speed4x4x
DVD-R write speedDiffers16x8x
DVD-RAM write speed5x5x
DVD-RW write speed6x6x
DVD write speedDiffers16x8x
DVD rewrite speedDiffers6x8x
DVD+R Double Layer write speedKnown for one8x
Reading speed8 differ
CD read speedDiffers48x24x
CD-R read speedDiffers48x24x
CD-RW read speedDiffers48x20x
DVD+R read speedDiffers16x8x
DVD-R Double Layer read speedKnown for one4x
DVD-R read speedDiffers16x8x
DVD-RAM read speedKnown for one5x
DVD-RW read speedDiffers16x6x
DVD+RW read speedDiffers16x8x
DVD read speedDiffers16x8x
CD-ROM read speedKnown for one48x
Access time1 differ
Access timeDiffers120 ms130 ms
Weight & dimensions1 differ
WeightDiffers700 g190 g
Other features3 differ
Media types supportedKnown for oneDVD-ROM,DVD-R,DVD+R, DVD+RW,CD-ROM, CD-R, CD-RW
Minimum system requirementsKnown for one-MPC Level 3 -MultiRead -PC2001
Write methodsKnown for oneDAO, SAO,TAO + zero gap, variable / fixed packet, multisession
Dimensions (WxDxH)Differs146 x 170 x 41.3 mm128 x 12.7 x 129 mm
Number of optical discs1 discs1 discs
DVD+R speedDiffers16x8x
DVD+RW speed8x8x
DVD-R speedDiffers16x8x
DVD-RW speed6x6x
Double Layer DVD write speedKnown for one4x
Drive devices burst data transfer rate (PIO)Known for oneMode 4
Drive devices burst data transfer rate (Ultra DMA)Known for one33
Technical featuresKnown for one-12 cm / 8 cm CD & DVD -buffer underrun prevention

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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