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Product comparison · 2 optical disc drives

NEC AD-7173 Black vs NEC AD-7630 Black

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  • 29specifications compared
  • 16differ
  • 13identical
  • 11known for one product only

Key differences

  • Disc loading type
    • Tray
    • Slot
  • Interface
    • Serial ATA
    • IDE/ATA
  • CD write speed
    • 48x
    • 24x
  • CD rewrite speed
    • 32x
    • 16x
  • CD-R write speed
    • 48x
    • 24x
  • CD-RW write speed
    • 32x
    • 16x
  • DVD+R write speed
    • 18x
    • 8x
  • DVD-R Double Layer write speed
    • 8x
    • 4x

Side by side

Differences highlightedShow differences only
40 specifications
A

NEC

AD-7173 BlackView product
B

NEC

AD-7630 BlackView product
Design1 differ
InternalYesYes
Product colourBlackBlack
Disc loading typeDiffersTraySlot
MountingKnown for oneVertical/Horizontal
Performance1 differ
Optical drive typeDVD-RWDVD-RW
InterfaceDiffersSerial ATAIDE/ATA
Drive device, buffer size2 MB2 MB
Burst transfer rateKnown for one150 MB/s
Writing speed8 differ
CD write speedDiffers48x24x
CD rewrite speedDiffers32x16x
CD-R write speedDiffers48x24x
CD-RW write speedDiffers32x16x
DVD+R write speedDiffers18x8x
DVD+RW write speed8x8x
DVD-R Double Layer write speedDiffers8x4x
DVD-R write speedDiffers18x8x
DVD-RAM write speedDiffers12x5x
DVD-RW write speed6x6x
DVD write speedKnown for one8x
Reading speed2 differ
CD read speedDiffers48x24x
CD-ROM read speedDiffers48x24x
DVD-R Double Layer read speedKnown for one4x
DVD-RAM read speedKnown for one8x
DVD read speedKnown for one8x
DVD-ROM read speedKnown for one16x
Access time2 differ
DVD drive average random access timeDiffers160 ms190 ms
Access timeKnown for one190 ms
CD-ROM drive average random access timeDiffers140 ms190 ms
Record modesidentical
Disc-at-once (DAO)YesYes
Fixed packetYesYes
Multi sessionYesYes
Session-at-once (SAO)YesYes
Track-at-once (TAO)YesYes
Variable packetYesYes
Weight & dimensions1 differ
WeightDiffers705 g160 g
HeightKnown for one42 mm
Other features1 differ
Media types supportedKnown for oneDVD-ROM, DVD-R, DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R DL, DVD-R DL, DVD-RAM, DVD-Video, CD-ROM, CD-ROM XA, CD-Audio, CD-Extra, CD-Text, CD-I Ready, CD-Bridge, Photo-CD, Video-CD, Hybrid-CD
Write methodsKnown for oneDAO (disc at once), SAO (session at once), TAO (track at once) with zero gap, variable or fixed packet, multisession
Dimensions (WxDxH)Differs148 x 175 x 42 mm129 x 128 x 12.7 mm
Number of optical discs1 discs1 discs

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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