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Product comparison · 2 optical disc drives

LG GDR-H20N, black vs NEC AD-7170S DVD-RW 18x SATA

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  • 8specifications compared
  • 5differ
  • 3identical
  • 20known for one product only

Key differences

  • Product colour
    • Black
    • Beige
  • CD read speed
    • 52x
    • 48x
  • DVD drive average random access time
    • 100 ms
    • 160 ms
  • Weight
    • 700 g
    • 705 g
  • Dimensions (WxDxH)
    • 146 x 165 x 41.3 mm
    • 148 x 175 x 42 mm

Side by side

Differences highlightedShow differences only
28 specifications
A

LG

GDR-H20N, blackView product
B

NEC

AD-7170S DVD-RW 18x SATAView product
Design1 differ
InternalYesYes
Product colourDiffersBlackBeige
Disc loading typeKnown for oneTray
Performanceidentical
InterfaceSerial ATASerial ATA
Drive device, buffer sizeKnown for one0.198 MB
Writing speedidentical
CD write speedKnown for one48x
CD rewrite speedKnown for one32x
DVD+R write speedKnown for one18x
DVD+RW write speedKnown for one8x
DVD-R Double Layer write speedKnown for one8x
DVD-R write speedKnown for one18x
DVD-RAM write speedKnown for one12x
DVD-RW write speedKnown for one6x
Reading speed1 differ
CD read speedDiffers52x48x
DVD read speed16x16x
Access time1 differ
DVD drive average random access timeDiffers100 ms160 ms
Access timeKnown for one140 ms
CD-ROM drive average random access timeKnown for one900 ms
Record modesidentical
Disc-at-once (DAO)Known for oneYes
Fixed packetKnown for oneYes
Multi sessionKnown for oneYes
Session-at-once (SAO)Known for oneYes
Track-at-once (TAO)Known for oneYes
Variable packetKnown for oneYes
Weight & dimensions1 differ
WeightDiffers700 g705 g
Other features1 differ
Media types supportedKnown for oneDVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R9, CD-ROM, CD-R and CD-RW with 80mm and 120mm diameter
Dimensions (WxDxH)Differs146 x 165 x 41.3 mm148 x 175 x 42 mm
Compatible operating systemsKnown for oneWindows 95, 98, 2K, ME, NT 4.0, XP, Vista, 2003 server Linux Slackware Ver 3.10, Solaris Ver 2.4 +

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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