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Product comparison · 2 optical disc drives

NEC ND-3551 DVD RW Silver vs NEC ND-7550 DVD-RW Black Slim

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  • 37specifications compared
  • 23differ
  • 14identical
  • 6known for one product only

Key differences

  • Product colour
    • Silver
    • Black
  • CD write speed
    • 32x
    • 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 Double Layer write speed
    • 6x
    • 4x
  • DVD-R write speed
    • 16x
    • 8x

Side by side

Differences highlightedShow differences only
43 specifications
A

NEC

ND-3551 DVD RW SilverView product
B

NEC

ND-7550 DVD-RW Black SlimView product
Design1 differ
InternalYesYes
Product colourDiffersSilverBlack
Disc loading typeTrayTray
Performanceidentical
Optical drive typeDVD-RWDVD-RW
Drive device, buffer sizeKnown for one2 MB
Writing speed8 differ
CD write speedDiffers32x24x
CD rewrite speedDiffers32x20x
CD-R write speedDiffers48x24x
CD-RW write speedDiffers32x20x
DVD+R write speedDiffers16x8x
DVD+RW write speed8x8x
DVD-R Double Layer write speedDiffers6x4x
DVD-R write speedDiffers16x8x
DVD-RAM write speedKnown for one5x
DVD-RW write speedDiffers8x6x
DVD write speed8x8x
DVD rewrite speed8x8x
DVD-R9 write speedKnown for one8x
Reading speed8 differ
CD read speedDiffers48x24x
CD-R read speedDiffers48x24x
CD-RW read speedDiffers32x20x
DVD+R read speedDiffers16x8x
DVD-R Double Layer read speedDiffers6x4x
DVD-R read speedDiffers16x8x
DVD-RAM read speedKnown for one5x
DVD-RW read speedDiffers8x6x
DVD+RW read speed8x8x
DVD read speedDiffers16x8x
Access time1 differ
Access timeDiffers140 ms130 ms
Weight & dimensionsidentical
WeightKnown for one190 g
Other features5 differ
Media types supportedDiffersDVD-ROM, DVD-R (DL - 2005), DVD-RW, DVD+R, DVD+RW,DVD+R9,CD-ROM, CD-R & CD-RW - 80mm & 120mmDVD-ROM,DVD-R,DVD+R, DVD+RW,CD-ROM, CD-R, CD-RW
Minimum system requirements-MPC Level 3 -MultiRead -PC2001-MPC Level 3 -MultiRead -PC2001
Write methodsDAO, SAO,TAO + zero gap, variable / fixed packet, multisessionDAO, SAO,TAO + zero gap, variable / fixed packet, multisession
Dimensions (WxDxH)Differs148 x 42 x 190 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 speedDiffers6x4x
Drive devices burst data transfer rate (PIO)Mode 4Mode 4
Drive devices burst data transfer rate (Ultra DMA)3333
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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