Product comparison · 2 optical disc drives

LG GSA-H12N optical disc drive Internal Black vs NEC AD-7540A DVD-RW 8x slim for notebooks

14specifications compared
9differ
5identical
18known for one product only

Key differences

CD write speed
- GSA-H12N optical disc drive Internal Black:48x
- AD-7540A DVD-RW 8x slim for notebooks:24x
CD rewrite speed
- GSA-H12N optical disc drive Internal Black:32x
- AD-7540A DVD-RW 8x slim for notebooks:24x
DVD+R write speed
- GSA-H12N optical disc drive Internal Black:18x
- AD-7540A DVD-RW 8x slim for notebooks:8x
DVD-R Double Layer write speed
- GSA-H12N optical disc drive Internal Black:8x
- AD-7540A DVD-RW 8x slim for notebooks:4x
DVD-R write speed
- GSA-H12N optical disc drive Internal Black:18x
- AD-7540A DVD-RW 8x slim for notebooks:8x
DVD-RAM write speed
- GSA-H12N optical disc drive Internal Black:12x
- AD-7540A DVD-RW 8x slim for notebooks:5x
CD read speed
- GSA-H12N optical disc drive Internal Black:48x
- AD-7540A DVD-RW 8x slim for notebooks:24x
DVD drive average random access time
- GSA-H12N optical disc drive Internal Black:175 ms
- AD-7540A DVD-RW 8x slim for notebooks:180 ms

Side by side

Differences highlightedShow differences only

Comparison of GSA-H12N, AD-7540A DVD-RW 8x slim for notebooks
32 specifications	A LG GSA-H12N optical disc drive Internal Black Model GSA-H12N View product	B NEC AD-7540A DVD-RW 8x slim for notebooks View product
Designidentical
Internal	Yes	Yes
Disc loading type	Tray	Tray
Product colourKnown for one	Black	Unknown — not stated by the source
Performanceidentical
Interface	EIDE/ATA	EIDE/ATA
Plug and PlayKnown for one	Yes	Unknown — not stated by the source
Writing speed6 differ
CD write speedDiffers	48x	24x
CD rewrite speedDiffers	32x	24x
DVD+R write speedDiffers	18x	8x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speedDiffers	8x	4x
DVD-R write speedDiffers	18x	8x
DVD-RAM write speedDiffers	12x	5x
DVD-RW write speed	6x	6x
DVD+R Double Layer write speedKnown for one	10x	Unknown — not stated by the source
Reading speed1 differ
CD read speedDiffers	48x	24x
DVD read speedKnown for one	Unknown — not stated by the source	8x
DVD-ROM read speedKnown for one	16x	Unknown — not stated by the source
Access time1 differ
DVD drive average random access timeDiffers	175 ms	180 ms
Access timeKnown for one	Unknown — not stated by the source	150 ms
CD-ROM drive average random access timeKnown for one	125 ms	Unknown — not stated by the source
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
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
Weight & dimensionsidentical
WeightKnown for one	Unknown — not stated by the source	180 g
Other features1 differ
Media types supportedKnown for one	Unknown — not stated by the source	DVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD +R, DVD +R9, DVD +RW, CD-ROM, CD-R, CD-RW
Dimensions (WxDxH)Differs	146 x 41.3 x 165 mm	128 x 129 x 12.7 mm
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	PIO mode 4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	Ultra DMA 33
Seek timeKnown for one	2 ms	Unknown — not stated by the source

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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