Product comparison · 2 optical disc drives

LG GDR-8164-B-R DVD ROM 16x/52x vs NEC AD-7540A DVD-RW 8x slim for notebooks

10specifications compared
8differ
2identical
23known for one product only

Key differences

CD read speed
- GDR-8164-B-R DVD ROM 16x/52x:52x
- AD-7540A DVD-RW 8x slim for notebooks:24x
DVD read speed
- GDR-8164-B-R DVD ROM 16x/52x:16x
- AD-7540A DVD-RW 8x slim for notebooks:8x
DVD drive average random access time
- GDR-8164-B-R DVD ROM 16x/52x:100 ms
- AD-7540A DVD-RW 8x slim for notebooks:180 ms
Access time
- GDR-8164-B-R DVD ROM 16x/52x:160 ms
- AD-7540A DVD-RW 8x slim for notebooks:150 ms
Weight
- GDR-8164-B-R DVD ROM 16x/52x:670 g
- AD-7540A DVD-RW 8x slim for notebooks:180 g
Dimensions (WxDxH)
- GDR-8164-B-R DVD ROM 16x/52x:146 x 165 x 41.3 mm
- AD-7540A DVD-RW 8x slim for notebooks:128 x 129 x 12.7 mm
Drive devices burst data transfer rate (PIO)
- GDR-8164-B-R DVD ROM 16x/52x:16.6
- AD-7540A DVD-RW 8x slim for notebooks:PIO mode 4
Drive devices burst data transfer rate (Ultra DMA)
- GDR-8164-B-R DVD ROM 16x/52x:33.3
- AD-7540A DVD-RW 8x slim for notebooks:Ultra DMA 33

Side by side

Differences highlightedShow differences only

Comparison of GDR-8164-B-R DVD ROM 16x/52x, AD-7540A DVD-RW 8x slim for notebooks
33 specifications	A LG GDR-8164-B-R DVD ROM 16x/52x View product	B NEC AD-7540A DVD-RW 8x slim for notebooks View product
Designidentical
Disc loading typeKnown for one	Unknown — not stated by the source	Tray
MountingKnown for one	Vertical/Horizontal	Unknown — not stated by the source
Performanceidentical
Drive device, buffer sizeKnown for one	0.256 MB	Unknown — not stated by the source
Burst transfer rateKnown for one	16.6 MB/s	Unknown — not stated by the source
Writing speedidentical
CD write speedKnown for one	Unknown — not stated by the source	24x
CD rewrite speedKnown for one	Unknown — not stated by the source	24x
DVD+R write speedKnown for one	Unknown — not stated by the source	8x
DVD+RW write speedKnown for one	Unknown — not stated by the source	8x
DVD-R Double Layer write speedKnown for one	Unknown — not stated by the source	4x
DVD-R write speedKnown for one	Unknown — not stated by the source	8x
DVD-RAM write speedKnown for one	Unknown — not stated by the source	5x
DVD-RW write speedKnown for one	Unknown — not stated by the source	6x
Reading speed2 differ
CD read speedDiffers	52x	24x
DVD read speedDiffers	16x	8x
Access time2 differ
DVD drive average random access timeDiffers	100 ms	180 ms
Access timeDiffers	160 ms	150 ms
CD-ROM drive average random access timeKnown for one	90 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 & dimensions1 differ
WeightDiffers	670 g	180 g
Other features3 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 165 x 41.3 mm	128 x 129 x 12.7 mm
Drive devices burst data transfer rate (PIO)Differs	16.6	PIO mode 4
Drive devices burst data transfer rate (Ultra DMA)Differs	33.3	Ultra DMA 33
Compatible operating systemsKnown for one	Windows 95, 98, 2K, ME, NT 4.0, XP	Unknown — not stated by the source
Maximum data transfer rateKnown for one	7.8 Mbit/s	Unknown — not stated by the source
Sustained data rateKnown for one	22.1 MB/s	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.

More optical disc drive comparisons

All optical disc drive comparisons