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Product comparison · 2 optical disc drives

LG GSA-E20N optical disc drive DVD-RW vs NEC AD-7170S Silver

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  • 15specifications compared
  • 7differ
  • 8identical
  • 21known for one product only

Key differences

  • Internal
    • No
    • Yes
  • DVD+R write speed
    • 16x
    • 18x
  • DVD-R Double Layer write speed
    • 10x
    • 8x
  • DVD-R write speed
    • 16x
    • 18x
  • DVD drive average random access time
    • 175 ms
    • 160 ms
  • CD-ROM drive average random access time
    • 120 ms
    • 140 ms
  • Dimensions (WxDxH)
    • 160 x 230 x 50 mm
    • 148 x 175 x 42 mm

Side by side

Differences highlightedShow differences only
36 specifications
A

LG

GSA-E20N optical disc drive DVD-RW

Model GSA-E20N

View product
B

NEC

AD-7170S SilverView product
Design1 differ
InternalDiffersNoYes
Product colourKnown for oneSilver
Disc loading typeKnown for oneTray
MountingKnown for oneVertical/Horizontal
Performanceidentical
InterfaceKnown for oneSerial ATA
Writing speed3 differ
CD-R write speedKnown for one48x
CD-RW write speedKnown for one32x
DVD+R write speedDiffers16x18x
DVD-R Double Layer write speedDiffers10x8x
DVD-R write speedDiffers16x18x
DVD+R Double Layer write speedKnown for one6x
Reading speedidentical
DVD read speedKnown for one16x
CD-ROM read speedKnown for one48x
DVD-ROM read speedKnown for one16x
Access time2 differ
DVD drive average random access timeDiffers175 ms160 ms
CD-ROM drive average random access timeDiffers120 ms140 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 & dimensionsidentical
WeightKnown for one705 g
Other features1 differ
Media types supportedKnown for oneDVD-ROM, DVD-R (DL approx march 2005), DVD-RW, DVD+R, DVD+RW,DVD+R9,CD-ROM, CD-R & CD-RW 80mm & 120mm
Write methodsKnown for oneDAO, SAO,TAO zero gap,variable / fixed packet, multisession
Dimensions (WxDxH)Differs160 x 230 x 50 mm148 x 175 x 42 mm
Number of optical discsKnown for one1 discs
Double Layer DVD write speedKnown for one8x

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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