Product comparison · 2 optical disc drives

LG GH20NS15 optical disc drive Internal Black vs NEC ND-4571 optical disc drive Internal Black

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

Key differences

Interface
- GH20NS15 optical disc drive Internal Black:Serial ATA
- ND-4571 optical disc drive Internal Black:IDE/ATA
DVD+R write speed
- GH20NS15 optical disc drive Internal Black:20x
- ND-4571 optical disc drive Internal Black:16x
DVD-R write speed
- GH20NS15 optical disc drive Internal Black:20x
- ND-4571 optical disc drive Internal Black:16x
DVD-RAM write speed
- GH20NS15 optical disc drive Internal Black:12x
- ND-4571 optical disc drive Internal Black:5x
DVD-RW write speed
- GH20NS15 optical disc drive Internal Black:6x
- ND-4571 optical disc drive Internal Black:8x
DVD drive average random access time
- GH20NS15 optical disc drive Internal Black:175 ms
- ND-4571 optical disc drive Internal Black:160 ms
CD-ROM drive average random access time
- GH20NS15 optical disc drive Internal Black:120 ms
- ND-4571 optical disc drive Internal Black:140 ms
Weight
- GH20NS15 optical disc drive Internal Black:780 g
- ND-4571 optical disc drive Internal Black:900 g

Side by side

Differences highlightedShow differences only

Comparison of GH20NS15, ND-4571
32 specifications	A LG GH20NS15 optical disc drive Internal Black Model GH20NS15 View product	B NEC ND-4571 optical disc drive Internal Black Model ND-4571 View product
Designidentical
Internal	Yes	Yes
Product colour	Black	Black
Disc loading type	Tray	Tray
Performance1 differ
InterfaceDiffers	Serial ATA	IDE/ATA
Drive device, buffer size	2 MB	2 MB
Writing speed4 differ
CD write speed	48x	48x
CD rewrite speed	32x	32x
DVD+R Double Layer write speedKnown for one	10x	Unknown — not stated by the source
DVD+R write speedDiffers	20x	16x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speedKnown for one	10x	Unknown — not stated by the source
DVD-R write speedDiffers	20x	16x
DVD-RAM write speedDiffers	12x	5x
DVD-RW write speedDiffers	6x	8x
Reading speedidentical
CD read speed	48x	48x
DVD read speed	16x	16x
Access time2 differ
DVD drive average random access timeDiffers	175 ms	160 ms
CD-ROM drive average random access timeDiffers	120 ms	140 ms
Record modesidentical
Disc-at-once (DAO)Known for one	Yes	Unknown — not stated by the source
Layer Jump RecordingKnown for one	Yes	Unknown — not stated by the source
Packet writingKnown for one	Yes	Unknown — not stated by the source
Random writeKnown for one	Yes	Unknown — not stated by the source
Sequential writingKnown for one	Yes	Unknown — not stated by the source
Session-at-once (SAO)Known for one	Yes	Unknown — not stated by the source
Track-at-once (TAO)Known for one	Yes	Unknown — not stated by the source
Operational conditionsidentical
Operating relative humidity (H-H)Known for one	15 - 85%	Unknown — not stated by the source
Operating temperature (T-T)Known for one	5 - 45 °C	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	10 - 90%	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-30 - 60 °C	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	780 g	900 g
Other features1 differ
Dimensions (WxDxH)Differs	146 x 41.3 x 165 mm	148 x 42 x 190 mm
Media types supportedKnown for one	Unknown — not stated by the source	DVD-ROM,DVD-R,DVD+R, DVD+RW,CD-ROM, CD-R, CD-RW

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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