Product comparison · 2 optical disc drives

LG GH22LS optical disc drive Internal Black vs NEC AD-7191A optical disc drive Internal Silver

17specifications compared
9differ
8identical
24known for one product only

Key differences

Product colour
- GH22LS optical disc drive Internal Black:Black
- AD-7191A optical disc drive Internal Silver:Silver
Interface
- GH22LS optical disc drive Internal Black:Serial ATA
- AD-7191A optical disc drive Internal Silver:EIDE/ATA
DVD+R write speed
- GH22LS optical disc drive Internal Black:22x
- AD-7191A optical disc drive Internal Silver:20x
DVD-R Double Layer write speed
- GH22LS optical disc drive Internal Black:12x
- AD-7191A optical disc drive Internal Silver:8x
DVD-R write speed
- GH22LS optical disc drive Internal Black:22x
- AD-7191A optical disc drive Internal Silver:20x
DVD drive average random access time
- GH22LS optical disc drive Internal Black:140 ms
- AD-7191A optical disc drive Internal Silver:160 ms
CD-ROM drive average random access time
- GH22LS optical disc drive Internal Black:120 ms
- AD-7191A optical disc drive Internal Silver:140 ms
Weight
- GH22LS optical disc drive Internal Black:780 g
- AD-7191A optical disc drive Internal Silver:600 g

Side by side

Differences highlightedShow differences only

Comparison of GH22LS, AD-7191A
41 specifications	A LG GH22LS optical disc drive Internal Black Model GH22LS View product	B NEC AD-7191A optical disc drive Internal Silver Model AD-7191A View product
Design1 differ
Internal	Yes	Yes
Product colourDiffers	Black	Silver
Disc loading typeKnown for one	Unknown — not stated by the source	Tray
Performance1 differ
InterfaceDiffers	Serial ATA	EIDE/ATA
LightScribeKnown for one	Yes	Unknown — not stated by the source
Drive device, buffer sizeKnown for one	2 MB	Unknown — not stated by the source
Writing speed3 differ
CD write speed	48x	48x
CD rewrite speed	32x	32x
DVD+R Double Layer write speedKnown for one	12x	Unknown — not stated by the source
DVD+R write speedDiffers	22x	20x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speedDiffers	12x	8x
DVD-R write speedDiffers	22x	20x
DVD-RAM write speed	12x	12x
DVD-RW write speed	6x	6x
Reading speedidentical
CD read speed	48x	48x
CD-R read speedKnown for one	48x	Unknown — not stated by the source
CD-ROM read speedKnown for one	48x	Unknown — not stated by the source
CD-RW read speedKnown for one	40x	Unknown — not stated by the source
DVD+R read speed	16x	16x
DVD-R Double Layer read speedKnown for one	12x	Unknown — not stated by the source
DVD-R read speedKnown for one	16x	Unknown — not stated by the source
DVD-RAM read speedKnown for one	12x	Unknown — not stated by the source
DVD-ROM read speedKnown for one	16x	Unknown — not stated by the source
DVD-RW read speedKnown for one	12x	Unknown — not stated by the source
DVD+R Double Layer read speedKnown for one	12x	Unknown — not stated by the source
DVD+RW read speedKnown for one	12x	Unknown — not stated by the source
Access time2 differ
DVD drive average random access timeDiffers	140 ms	160 ms
CD-ROM drive average random access timeDiffers	120 ms	140 ms
Weight & dimensions1 differ
WeightDiffers	780 g	600 g
HeightKnown for one	Unknown — not stated by the source	42 mm
Other features1 differ
Dimensions (WxDxH)Differs	146 x 165 x 41 mm	148 x 170 x 42 mm
Compatible operating systemsKnown for one	Windows ME, XP, 2000, Vista x32/x64	Unknown — not stated by the source
Media types supportedKnown for one	Unknown — not stated by the source	DVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R9, CD-ROM, CD-R, CD-RW
Record modesidentical
Disc-at-once (DAO)Known for one	Unknown — not stated by the source	Yes
Fixed packetKnown for one	Unknown — not stated by the source	Yes
Multi sessionKnown for one	Unknown — not stated by the source	Yes
Packet writingKnown for one	Unknown — not stated by the source	Yes
Session-at-once (SAO)Known for one	Unknown — not stated by the source	Yes
Track-at-once (TAO)Known for one	Unknown — not stated by the source	Yes
Variable packetKnown for one	Unknown — not stated by the source	Yes

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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